If you’re not sure which Microsoft 365 product you have, see What version of Office am I using? Otherwise, pick your version of Microsoft 365 from below.
Important You can’t run add-ins or MDE files compiled in a 32-bit version of Microsoft 365 on a 64-bit version of Microsoft 365 and vice versa.
I know which version I want. How do I install it?
The 64-bit version of Microsoft 365 is automatically installed unless you explicitly select the 32-bit version before beginning the installation process.
To install either the 32 or 64-bit version of Microsoft 365, Office 2021, or Office 2019, follow the steps in Install Office on a PC.
Important: If you install the 64-bit version, but want the 32-bit version instead, you must first uninstall the 64-bit version before installing the 32-bit version. The same is true if you installed the 32-bit version, but want to install the 64-bit version. See “Office (64-bit or 32-bit) couldn’t be installed” error.
If you’re still not sure which version, 32-bit or 64-bit is a better choice for you, see the section below.
Reasons to choose the 64-bit version
Computers running 64-bit versions of Windows generally have more resources such as processing power and memory, than their 32-bit predecessors. Also, 64-bit applications can access more memory than 32-bit applications (up to 18.4 million Petabytes). Therefore, if your scenarios include large files and/or working with large data sets and your computer is running 64-bit version of Windows, 64-bit is the right choice when:
-
You’re working with large data sets, like enterprise-scale Excel workbooks with complex calculations, many pivot tables, data connections to external databases, Power Pivot, 3D Map, Power View, or Get & Transform. The 64-bit version of Microsoft 365 may perform better in these cases. See Excel specifications and limits, Data Model specification and limits, and Memory usage in the 32-bit edition of Excel.
-
You’re using add-ins with Outlook, Excel, or other Office apps. While 32-bit applications can work with add-ins, they can use up a system’s available virtual address space. With 64-bit apps, you have up to 128 TB of virtual address space which the app and any add-ins running the same process can share. With 32-bit apps, you might get as little as 2 GB of virtual address space which in many cases isn’t enough and can cause the app to stop responding or crash.
-
You’re working with extremely large pictures, videos, or animations in PowerPoint. The 64-bit version of Microsoft 365 may be better suited to handle these complex slide decks.
-
You’re working with files over 2 GB in Project, especially if the project has many sub-projects.
-
You’re developing in-house Microsoft 365 solutions like add-ins or document-level customization. Using the 64-bit version of Microsoft 365 lets you deliver a 64-bit version of those solutions as well as a 32-bit version. In-house Microsoft 365 solution developers should have access to the 64-bit Office 2016 for testing and updating these solutions.
-
You’re working with the Large Number data type in Access, and while this data type is supported by 32-bit Access, you may see unexpected results when executing code or expressions that use native 32-bit VBA libraries. 64-bit VBA provides the LongLong data type which fully supports large numbers. For more information, see Using the Large Number data type.
Reasons to choose the 32-bit version
The following computer systems can only install 32-bit Microsoft 365. Check your Windows version.
-
64-bit Windows 10 with ARM-based processor
-
32-bit operating system with an x86 (32-bit) processor
-
Less than 4 GB RAM
Tip: If you have 64-bit operating system with an x64-based processor, you can choose to install 32-bit or 64-bit Microsoft 365.
IT professionals, and developers in particular, should also review the following situations where the 32-bit version of Microsoft 365 is still the best choice for you or your organization.
-
You have 32-bit COM Add-ins with no 64-bit alternative. You can continue to run 32-bit COM add-ins in 32-bit Microsoft 365 on 64-bit Windows. You can also try contacting the COM Add-in vendor and requesting a 64-bit version.
-
You use 32-bit controls with no 64-bit alternative. You can continue to run 32-bit controls in 32-bit Microsoft 365 like Microsoft (Mscomctl.ocx, comctl.ocx), or any existing 3rd-party 32-bit controls.
-
Your VBA code uses Declare statements Most VBA code doesn’t need to change when using in 64-bit or 32-bit, unless you use Declare statements to call WindowsAPI using 32-bit data types like long, for pointers and handles. In most cases, adding PtrSafe to the Declare and replacing long with LongPtr will make the Declare statement compatible with both 32- and 64-bit. However this might not be possible in rare cases where there is no 64-bit API to Declare. For more information about what VBA changes are needed to make it run on 64-bit Microsoft 365, see 64-Bit Visual Basic for Applications Overview.
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You have 32-bit MAPI applications for Outlook. With a growing number of 64-bit Outlookcustomers, rebuilding 32-bit MAPI applications, add-ins, or macros for 64-bit Outlook is the recommended option, but if needed you can continue to run them with 32-bit Outlook only, as well. To learn about preparing Outlook applications for both 32-bit and 64-bit platforms, see Building MAPI Applications on 32-Bit and 64-Bit Platforms and the Outlook MAPI Reference.
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You’re activating a 32-bit OLE server or object. You can continue to run your 32-bit OLE Server application with a 32-bit version of Microsoft 365 installed.
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You need 32-bit Microsoft Access .mde, .ade, and .accde database files. While you can recompile 32-bit .mde, .ade, and .accde files to make them 64-bit compatible, you can continue to run 32-bit .mde, .ade, and .accde files in 32-bit Access.
-
You require Legacy Equation Editor or WLL (Word Add-in libraries) files in Word. You can continue to use Legacy Word Equation Editor and run WLL files in 32-bit Word.
-
You have an old embedded media file in your PowerPoint presentation with no available 64-bit codec.
Ready to install?
To install either the 32 or 64-bit version of Microsoft 365, Office 2021, or Office 2019, follow the steps in Install Office on a PC.
I know which version I want. How do I install it?
The 32-bit version of Microsoft 365 is automatically installed unless you explicitly select the 64-bit version before beginning the installation process.
To install either the 32 or 64-bit version of Office 2016, follow the steps in Install Microsoft 365 or 2016 on a PC.
Important: If you already installed the 32-bit version, but want to install the 64-bit version instead (or vice versa), you must uninstall the version you don’t want before installing the version you do want. See “Office (64-bit or 32-bit) couldn’t be installed” error.
If you’re still not sure which version, 32-bit or 64-bit is a better choice for you, see the section below.
Reasons to choose the 64-bit version
Computers running 64-bit versions of Windows generally have more resources such as processing power and memory, than their 32-bit predecessors. Also, 64-bit applications can access more memory than 32-bit applications (up to 18.4 million Petabytes). Therefore, if your scenarios include large files and/or working with large data sets and your computer is running 64-bit version of Windows, 64-bit is the right choice when:
-
You’re working with large data sets, like enterprise-scale Excel workbooks with complex calculations, many pivot tables, data connections to external databases, Power Pivot, 3D Map, Power View, or Get & Transform. The 64-bit version of Microsoft 365 may perform better in these cases. See, Excel specifications and limits, Data Model specification and limits, and Memory usage in the 32-bit edition of Excel.
-
You’re working with extremely large pictures, videos, or animations in PowerPoint. The 64-bit version of Microsoft 365 may be better suited to handle these complex slide decks.
-
You’re working with files over 2 GB in Project, especially if the project has many sub-projects.
-
You’re developing in-house Microsoft 365 solutions like add-ins or document-level customization. Using the 64-bit version of Microsoft 365 lets you deliver a 64-bit version of those solutions as well as a 32-bit version. In-house Microsoft 365 solution developers should have access to the 64-bit Microsoft 365 2016 for testing and updating these solutions.
-
You’re working with the Large Number data type in Access, and while this data type is supported by 32-bit Access, you may see unexpected results when executing code or expressions that use native 32-bit VBA libraries. 64-bit VBA provides the LongLong data type which fully supports large numbers. For more information, see Using the Large Number data type.
Reasons to choose the 32-bit version
32-bit operating system with an x86 (32-bit) processor can only install 32-bit Microsoft 365. Check your Windows version.
Tip: If you have 64-bit operating system with an x64-based processor, you can choose to install 32-bit or 64-bit Microsoft 365.
IT Professionals and developers in particular, should also review the following situations where the 32-bit version of Microsoft 365 is still the best choice for you or your organization.
-
You have 32-bit COM Add-ins with no 64-bit alternative. You can continue to run 32-bit COM add-ins in 32-bit Microsoft 365 on 64-bit Windows. You can also try contacting the COM Add-in vendor and requesting a 64-bit version.
-
You use 32-bit controls with no 64-bit alternative. You can continue to run 32-bit controls in 32-bit Microsoft 365 like Microsoft Windows Common Controls (Mscomctl.ocx, comctl.ocx), or any existing 3rd-party 32-bit controls.
-
Your VBA code uses Declare statements Most VBA code doesn’t need to change when using in 64-bit or 32-bit, unless you use Declare statements to call WindowsAPI using 32-bit data types like long, for pointers and handles. In most cases, adding PtrSafe to the Declare and replacing long with LongPtr will make the Declare statement compatible with both 32- and 64-bit. However this might not be possible in rare cases where there is no 64-bit API to Declare. For more information about what VBA changes are needed to make it run on 64-bit Microsoft 365, see 64-Bit Visual Basic for Applications Overview.
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You have 32-bit MAPI applications for Outlook. With a growing number of 64-bit Outlookcustomers, rebuilding 32-bit MAPI applications, add-ins, or macros for 64-bit Outlook is the recommended option, but if needed you can continue to run them with 32-bit Outlook only, as well. To learn about preparing Outlook applications for both 32-bit and 64-bit platforms, see Building MAPI Applications on 32-Bit and 64-Bit Platforms and the Outlook MAPI Reference.
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You’re activating a 32-bit OLE server or object. You can continue to run your 32-bit OLE Server application with a 32-bit version of Microsoft 365 installed.
-
You need 32-bit Microsoft Access.mde, .ade, and .accde database files. While you can recompile 32-bit .mde, .ade, and .accde files to make them 64-bit compatible, you can continue to run 32-bit .mde, .ade, and .accde files in 32-bit Access.
-
You require Legacy Equation Editor or WLL (WordAdd-in libraries) files in Word. You can continue to use Legacy WordEquation Editor and run WLL files in 32-bit Word.
-
You have an old embedded media file in your PowerPoint presentation with no available 64-bit codec.
Ready to install?
To install either the 32 or 64-bit version of Office 2016, follow the steps in Install Microsoft 365 or 2016 on a PC.
There are two versions of Office 2013 available for installation, 32-bit and 64-bit. We recommend the 32-bit version of Microsoft 365 for most users, because it’s more compatible with most other applications, especially 3rd-party add-ins. However, consider the 64-bit version, especially if you’re working with large blocks of information or graphics.
I know I want the 64-bit version. How do I install it?
To install Office 2013, see Install Office 2013.
If you’re still not sure which is a better choice for you, see the sections below.
Reasons to choose the 64-bit version
The 64-bit version of Microsoft 365 has some limitations; however it is a good choice when:
-
You work with extremely large data sets, like enterprise-scale Excel workbooks with complex calculations, many pivot tables, connections to external databases, and using Power Pivot, Power Map, or Power View. The 64-bit version of Microsoft 365 may perform better for you.
-
You work with extremely large pictures, videos, or animations in PowerPoint. The 64-bit version may be better suited to handle these complex slide decks.
-
You work with extremely large Word documents. The 64-bit version might be better suited to handle Word documents with large tables, graphics, or other objects.
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You’re working with files over 2 gigabytes (GB) in Project 2013, especially if the project has several sub-projects.
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You want to keep the 64-bit version that you’re already using. The 32-bit and 64-bit versions of Microsoft 365 programs aren’t compatible, so you can’t install both on the same computer.
-
You’re developing in-house solutions, like add-ins or document-level customization.
-
Your organization requires that Hardware Data Execution Prevention (DEP) be enforced for Microsoft 365 applications. DEP is a set of hardware and software technologies that some organizations use to enhance security.
If none of these situations apply to you, the 32-bit version is most likely a better choice.
Note: The 32-bit version of Microsoft 365 works well with both the 32-bit and 64-bit versions of Windows. If you’re installing the 64-bit version of Microsoft 365, you need the 64-bit version of Windows. If you’re not installing on Windows, you don’t need to be concerned about 32-bit or 64-bit options. To determine how to tell what version of Microsoft 365 you’re using, go to What version of Office am I using?
If you decide to switch from 32-bit Microsoft 365 to 64-bit Microsoft 365, you must uninstall the 32-bit version first, and then install the 64-bit version.
Reasons to choose the 32-bit version
The 64-bit version of Microsoft 365 may perform better in some cases, but you need to know about limitations.
-
32-bit operating system with an x86 (32-bit) processor can only install 32-bit Microsoft 365. Check your Windows version.
-
If you have 64-bit operating system with an x64-based processor, you can choose to install 32-bit or 64-bit Microsoft 365.
IT Professionals and developers in particular, should look at the following situations, and review the linked overviews. If these limitations would affect you, the 32-bit version would be a better choice.
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Solutions that use ActiveX controls library. ComCtl controls won’t work. There are several ways for developers to work around this and provide a 64-bit solution.
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32-bit third party ActiveX controls and add-ins won’t work. The vendor would need to create 64-bit versions of these controls.
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Visual Basic for Applications (VBA) that contain Declare statements won’t work in the 64-bit version of Microsoft 365 without being updated. For more information about what VBA changes are needed to make it run on 64-bit Microsoft 365, see 64-bit Visual Basic for Applications Overview.
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Compiled Access databases, such as .MDE, .ADE, and .ACCDE files won’t work unless they’re specifically written for the 64-bit version of Microsoft 365.
-
You have 32-bit MAPI applications for Outlook. With a growing number of 64-bit Outlook customers, rebuilding 32-bit MAPI applications, add-ins, or macros for 64-bit Outlook is a recommended option. To learn more about preparing Outlook applications for both 32- and 64-bit platforms, see Building MAPI applications on 32-Bit and 64-Bit Platforms and the Outlook MAPI Reference.
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Microsoft 365 Excel Viewer, Access database engine of Access 2013, and Compatibility Pack for the 2007 Microsoft 365 system will block a 64-bit Office 2013 installation.
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The legacy Equation Editor in Word isn’t supported on 64-bit Office 2016, but the equation builder feature in Word 2013 is supported on all platforms. Also, Word Add-in Libraries (WLL) are not supported in 64-bit Office 2013.
If you have specific add-ins that you use in the 32-bit version of Microsoft 365, they might not work in 64-bit Microsoft 365, and vice versa. If you’re concerned, check your current version of Microsoft 365 before installing the new one. Consider testing the add-in with 64-bit Microsoft 365, or finding out if a 64-bit version of the add-in is available from the developer.
Important: If you’re an administrator who is deploying Microsoft 365, we have more 64-bit technical info available on TechNet at 64-bit editions of Office 2013.
Ready to install?
Follow the instructions in:
-
Download and install or reinstall Office 2013
Important:
Office 2010 is no longer supported. Upgrade to Microsoft 365 to work anywhere from any device and continue to receive support.
Upgrade now
Office 2010 was the first release where Office offered both 32-bit and 64-bit versions. The 32-bit version is Office is installed automatically. However, the version that’s right for you depends on how you plan to use Office. If you have specific add-ins that you use in the 32-bit version of Office, they might not work in 64-bit Office and vice versa. If you’re concerned, check your current version of Office before installing the new one. Consider testing the add-in with 64-bit Office, or checking if a 64-bit version of the add-in is available from the vendor/developer.
I know I want the 64-bit version. How do I install it?
To install Office 2010, see Office 2010.
If you’re still not sure which is a better choice for you, see the sections below.
Reasons to choose the 64-bit version
The benefits of using the 64-bit version of Office 2010 are listed below, and there are a few limitations such as not working well with some older version add-ins. It’s mostly because of the limitations that the 32-bit version is installed automatically (by default), even on the 64-bit Windowsoperating system.
If your work scenarios include very large files and/or working with large sets of data, and your computer is running the 64-bit version of Windows, 64-bit is the right choice specifically when:
-
You’re working with very large data sets, such as enterprise-scale Microsoft 365Excel workbooks with complex calculations, lots of pivot tables, connecting to external databases, and using features such as Power Pivot, 3D Map, Power View, or Get & Transform. Because 64-bit Microsoft 365 doesn’t impose specific limits on file size, as 32-bit Microsoft 365 does (2 gigabyte (GB) limit), it may work better with large data sets.
-
You’re working with extremely large pictures, videos, or animation in Microsoft 365 PowerPoint. The 64-bit version of Microsoft 365 may be better suited to handle these complex slide decks.
-
You’re working with files that take up over 2 gigabytes of space in Microsoft 365Project, especially if the project has many sub-projects.
-
You’re developing in-house Microsoft 365 solutions like add-ins or document-level customization.
-
Your organization requires that Hardware Data Execution Prevention (DEP) be enforced for Microsoft 365 applications. DEP is a set of hardware and software technologies that some organizations use to enhance security. For 64-bit installations DEP will always be enforced, while on 32-bit installations DEP needs to be configured through settings.
-
With more Outlook customers using 64-bit, rebuilding 32-bit Messaging Application Programming Interface (MAPI) applications, add-ins, or macros for 64-bit Outlook is the recommended option. But if necessary you can also continue to run them with 32-bit Outlook only.
Reasons to choose the 32-bit version
32-bit operating system with an x86 (32-bit) processor can only install 32-bit Microsoft 365. Check your Windows version.
If you have 64-bit operating system with an x64-based processor, you can choose to install 32-bit or 64-bit Microsoft 365.
Tip: In addition to providing support for the 32-bit versions of Windows, the 32-bit version of Microsoft 365 is supported on computers that run the 64-bit versions of Windows. Office 2010 lets users continue to use existing Microsoft ActiveX Controls, Component Object model (COM) add-ins, and Visual Basic for Applications (VBA). These are primarily 32-bit because no 64-bit versions are available for many add-ins.
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If your organization needs to continue to use extensions to Microsoft 365, such as ActiveX controls, third-party add-ins, in-house solutions built on previous versions of Microsoft 365, or 32-bit versions of software that interface directly with Microsoft 365, we recommend you go with the automatically installed 32-bit (x86) Office 2010 on computers that are running both 32-bit and 64-bit supported Windows operating systems.
-
You use 32-bit controls with no 64-bit alternative. You can continue to run 32-bit controls in 32-bit Microsoft 365 like Microsoft Windows Common Controls (Mscomctl.ocx, comctl.ocx), or any existing third-party 32-bit controls.
-
Your VBA code uses Declare statements. Visual Basic for Applications (VBA) that contain Declare statements won’t work in the 64-bit version of Microsoft 365 without being updated.
-
Compiled Access databases, like .MDE and .ACCDE files, won’t work unless they are specifically written for the 64-bit version of Microsoft 365.
-
You need Legacy Equation Editor or WLL (Word Add-in Libraries) file in Word. You can continue to use Legacy Word Equation Editor (WLL files were deprecated in 32-bit and not supported in Microsoft 3652010).
-
There is no codec (software used to compress or decompress a video or audio file) available in 64-bit for three QuickTime media formats. Therefore, if you have an old embedded media file in a PowerPoint presentation, you’ll need to use 32-bit Microsoft 365.
Ready to install?
Follow the instructions in:
-
Install Office 2010
See Also
Which Windows operating system am I running?
Note: Excel 2007 and earlier are all 32-bit.
Instructions for Excel 2016/2019/Office 365/Microsoft 365
Instructions for Excel 2013
Instructions for Excel 201
How to tell if Excel 2016/2019/Office 365 is 32-bit or 64-bit
First, select “File” from the main menu.
The select “Account” from the left menu.
Then select “About Excel” from the box on the right.
The text at the top of the dialog will show if Excel is 32 or 64 bit.
How to tell if Excel 2013 is 32-bit or 64-bit
First, select “File” from the main menu.
Then select “Account” from the menu on the left. On the right side of the screen is a small box with the words “About”. Despite lacking any visual indication that this is a button, it actually is one. Click on this button.
At the top of this window after a long sequence of numbers and letters are the words “32-bit” or “64-bit”.
How to tell if Excel 2010 is 32-bit or 64-bit
Select “File” then “Help”. On the right side look for the words “About Microsoft Excel”. Just below you will see the version and either (32-bit) or (64-bit).
See all How-To Articles
This tutorial demonstrates how to check which version of Office (Excel, Outlook, Access, PowerPoint, Word, etc.) you have installed. It also discusses the differences between the versions and why you might choose one over another.
Do I have 32-bit or 64-bit Office?
Below, you will learn how to check which version of Microsoft Office you have installed.
Office 2013 or Newer
If you have Office 2013 or newer follow these instructions to get your Office bit version:
- Select the File tab from the Ribbon
- Click Account
- Click About Excel (Outlook, PowerPoint, etc.)
- Look for the Office version information
Office 2010
The directions are slightly different for Office 2010:
- Select the File tab from the Ribbon
- Click Help
- Look for the Office version information under About Microsoft Excel
Office 2007
Office 2007 is 32-bit only.
Difference Between 32-bit and 64-bit Office
The primary benefit of using Office 64-bit instead of Office 32-bit, is the amount of available memory. With 32-bit Office, the application can only use 2GB of RAM memory, but with 64-bit Office there is no limit. This can be extremely useful when working in Excel with large data sets or when working with Word documents or PowerPoint presentations full of rich media (videos, animations, pictures, etc..). There is no direct benefit to using 32-bit Office over 64-bit Office. The only potential benefit is compatibility issues (see below).
Should I use 32-bit or 64-bit Office?
Office 64-bit can only be installed on machines running 64-bit Windows (Almost all newer Windows installations use 64-bit). Office 32-bit can be installed on machines running either 64-bit or 32-bit Windows. So should you choose 64-bit or 32-bit? Starting with Office 2019, Microsoft changed the default installation version from 32-bit to 64-bit. So Microsoft recommends using the 64-bit version. The only reason to use the 32-bit version (besides if you have 32-bit Windows of course) is if you have some add-in, control, code, or reference that uses 32-bit. For example, a 32-bit COM Add-in without a 64-bit alternative. Specifically some old Outlook Add-ins do not offer a 64-bit alternative.
What Windows version do I have?
Most likely you have 64-bit Windows, but here is how you can check.
Windows 10
- Type About your PC into the Windows Search Bar
- Select About your PC from the list
- Find Device specifications > System type to view your Windows bit version
Windows 8
- Point to lower-right corner of screen and click Search
- Type System in the Search box
- Select System from the list
- View the System Type to view your Windows bit version
Windows 7 / Vista
- Click Start
- Type System into the Start Search Box
- Click System Information in the Programs List
- Select System Summary
- Locate System Type under Item in the details pane
- If the value starts with x64 then you have 64-bit Windows. x86 indicates 32-bit Windows.
Can I Install Both 32-bit and 64-bit Office?
Microsoft claims that installing both 32-bit and 64-bit versions of Office on the same computer is not possible. However, it is possible, but a bit complicated (See Source 1 Below):
- Install 64-bit version first
- Install 32-bit version
- 32-bit and 64-bit installs must be different versions (ex. Office 32-bit 2013, Office 64-bit 2019)
- Only one version of Outlook can be installed
- If one of the versions refuses to activate then run commands like this (See Source 2 Below):
cd C:Program Files (x86)Microsoft OfficeOffice14
cscript ospp.vbs /actSources:
- http://excelmatters.com/2013/08/30/installing-32bit-and-64bit-office-versions-together/
- https://social.technet.microsoft.com/Forums/office/en-US/22e8c4ad-aa77-4c72-ad7d-37f4e867baae/microsoft-office-cannot-verify-the-license-for-this-product
To check if you have 32-bit or 64-bit package, look to the right of the version number. In Outlook 2013 and beyond, when you go to ‘File’, if you see ‘Office Account’, click on this. To check if you have 32-bit or 64-bit package, click on ‘About Outlook’.
Contents
- 1 How do I know if I have 32 or 64-bit office?
- 2 Is MS Office 2019 32 or 64-bit?
- 3 What is the difference between Office 32-bit and 64-bit?
- 4 Do I have 32 or 64-bit outlook?
- 5 How can I tell which version of Office I have?
- 6 How do you tell if your computer is 32 or 64-bit Windows 10?
- 7 Is Windows 10 a 64bit system?
- 8 Is 64 bit excel faster than 32-bit?
- 9 How can I tell what year Excel I have?
- 10 What happens if I install 32-bit Windows on 64 bit?
- 11 Is 64bit faster than 32-bit?
- 12 How do I tell what version of Office 365 I have?
- 13 How do I know if my team is 64 bit?
- 14 What is Microsoft Office version?
- 15 What version number is Office 2019?
- 16 How do I choose 32-bit or 64-bit?
- 17 Can Windows 10 run 32-bit?
- 18 How do I know if I have 64-bit Excel?
- 19 Does RAM make Excel faster?
- 20 Do I need 64-bit Excel?
How do I know if I have 32 or 64-bit office?
How to check your Office version
- Start Word.
- Click on Account.
- Click on About Word.
- See if it says 32-bit or 64-bit at the end of the Microsoft Word line.
Is MS Office 2019 32 or 64-bit?
For Office 2019 and Microsoft 365 Apps (previously known as Office 365), the default for new installations has now been set to 64-bit. Although the considerations for using 32-bit vs 64-bit are the same for Office 2010, 2013 and 2016, the default for new installations of these versions will remain 32-bit for now.
What is the difference between Office 32-bit and 64-bit?
Computers running 64-bit versions of Windows generally have more resources such as processing power and memory, than their 32-bit predecessors. Also, 64-bit applications can access more memory than 32-bit applications (up to 18.4 million Petabytes).
In Outlook, select File > Office Account > About Outlook > at the top of the box, the version number and 32-bit or 64-bit will display.
How can I tell which version of Office I have?
About Office: What version of Office am I using?
- Open any Office application, such as Word or Excel, and select Account.
- Under Product Information, you’ll find your Office product name and, in some cases, the full version number.
- For more information, such as the bit-version, choose About Excel.
How do you tell if your computer is 32 or 64-bit Windows 10?
Find operating system info in Windows 10
- Select the Start button > Settings > System > About . Open About settings.
- Under Device specifications > System type, see if you’re running a 32-bit or 64-bit version of Windows.
- Under Windows specifications, check which edition and version of Windows your device is running.
Is Windows 10 a 64bit system?
Windows 10 comes in both 32-bit and 64-bit varieties. While they look and feel nearly identical, the latter takes advantage of faster and better hardware specs. With the era of 32-bit processors winding down, Microsoft is putting the lesser version of its operating system on the back burner.
Is 64 bit excel faster than 32-bit?
A 32‐bit system can process the data in 32‐bit pieces whereas 64‐bit can process double that.Installing the 64‐bit version of Excel will certainly make your Excel models run faster and more efficiently but consider whether it’s really necessary before you take the plunge.
How can I tell what year Excel I have?
Excel 2013, 2016, 2019 (Office 365)
Start by clicking on the File button, on the top left corner of Excel. Click on Account, on the left-hand side of the screen, then About Excel. The version is visible in the first paragraph of the dialog box that appears.
What happens if I install 32-bit Windows on 64 bit?
To put it in simple words, if you run a 32-bit program on a 64-bit machine, it will work fine, and you won’t encounter any problems. Backward compatibility is an important part when it comes to computer technology. Therefore, 64 bit systems can support and run 32-bit applications.
Is 64bit faster than 32-bit?
Simply put, a 64-bit processor is more capable than a 32-bit processor because it can handle more data at once. A 64-bit processor can store more computational values, including memory addresses, which means it can access over 4 billion times the physical memory of a 32-bit processor.
How do I tell what version of Office 365 I have?
Open any Office application, such as Word or Excel, and select Account. Under Product Information, you’ll find your Office product name and, in some cases, the full version number. Product name, such as Office 365 ProPlus or Office Home and Student.
How do I know if my team is 64 bit?
To find out what version of Teams you’re on, click your profile picture at the top of the app, then click About > Version. This shows you a banner at the top of the app that tells you what version you’re running and when it was last updated. > Settings > About.
What is Microsoft Office version?
The most current version of Microsoft Office is Office 2019. There is a perpetual version (desktop or standalone version) that is a one-time purchase. Office 2019 comes in three editions (as noted above), 2019 Home and Student for Pc/Mac, 2019 Home and Business for Pc/Mac and Microsoft Office 2019 Professional.
What version number is Office 2019?
In the “Programs and Features” section in the Windows Control Panel, the version number of Office 2019 is also 16.0…
How do I choose 32-bit or 64-bit?
How to Choose Between 32-Bit and 64-Bit Versions of Windows 7
- Click Start→Control Panel→System and Maintenance→Performance Information and Tools.
- Click View.
- Under System type, see what version of Windows you’re currently running.
- Under 64-bit capable, see whether you can run a 64-bit version of Windows.
Can Windows 10 run 32-bit?
Windows 10 can run on both 32-bit and 64-bit processor architectures. If you have a desktop or laptop running the 32-bit version, you can upgrade to the 64-bit version without acquiring a new license.
How do I know if I have 64-bit Excel?
First, select “File” from the main menu. The select “Account” from the left menu. Then select “About Excel” from the box on the right. The text at the top of the dialog will show if Excel is 32 or 64 bit.
Does RAM make Excel faster?
Although memory does not affect Excel’s calculation or manipulation speed, the size of your database (number of columns and rows used) is affected by the amount of available RAM in your system. Remember, just because your computer has 8GB of RAM, that doesn’t mean you have that much available to work with.
Do I need 64-bit Excel?
In Choose the 32-bit or 64-bit Version of Office 2016, which actually applies to Office 2010–2016, Microsoft says “We recommend the 32-bit version of Office, because it helps prevent compatibility issues with most other applications, especially third-party add-ins.” For this reason, by default Office installs itself as
Beginning with version 2010, Excel became offered in two “bitness versions”: a 32-bit and a 64-bit. Prior to Excel 2010, only the 32-bit version was available.
The 32-bit and 64-bit versions of Excel are practically the same in terms of the features they provide to the user, but they are still different “by design,” as we will see right below.
Differences between Excel 32 bit and 64 bit are: Excel 64 bit can’t be installed on a 32-bit Windows; 32-bit version has a 2GB to 4GB memory limitation (2GB for versions that don’t have the LAA capability, and 3GB for versions with LAA update) whereas the 64 bit doesn’t; and the 64 bit is more secure with DEP feature enabled by default.
In the following sections, I will discuss the differences between Excel 32-bit and Excel 64-bit, including their benefits and downsides, how to know which bitness version you have, which one to choose, and some installation requirements and scenarios.
1- What is the difference between 32-bit and 64-bit Excel?
– Excel 32 bit can be installed on 32-bit and 64-bit Windows
The first difference between Excel 32-bit and 64-bit is that the 32 bit version can be installed on 32 bit Windows or 64 bit, while Excel 64-bit can only be installed on a 64-bit Windows.
– Excel 32 bit has memory limitation while 64 bit doesn’t
The difference between the 32-bit and 64-bit versions of Microsoft Excel is the amount of virtual memory that can be accessed by the program.
- For Excel 32-bit:
The virtual address space available for Excel 32-bit is limited to 2 GB of RAM that is shared with the open workbooks and the activated add-ins.
However, this 2 GB limit is increased to 3 and 4 GB of RAM for Excel versions that have the Large Address Aware (LAA) feature enabled, i.e. updated 32-bit versions of Excel 2013 and newer. On a 32-bit Windows, the virtual memory is increased for these versions to 3 GB, while on a 64-bit Windows, it is increased to 4 GB of RAM.
- For Excel 64-bit:
The 64-bit version of Excel does not have the same virtual memory limitations as the 32-bit version, and can access up to 8000 GB of RAM, which is a massive amount of memory that is more than enough, even for heavy Excel use.
– Excel 64 bit has DEP by default as opposed to 32 bit
DEP, which stands for hardware Data Execution Prevention, is a Windows built-in security feature that was introduced with Windows XP and Windows Server 2003 and that helps defend memory against harmful code.
DEP is enabled by default in Excel 64-bit, which is an advantage compared to Excel 32-bit where you need to do it manually through the Group Policy settings.
2- How to know if Excel is 32-bit or 64-bit?
To check which bit version you have, Excel 32-bit or 64-bit, you can follow these steps, depending on the Excel version you have:
- Excel 2007 and older: The version is definitely a 32-bit one, as there was no 64-bit version of Excel at that time.
- Excel 2010: Click on the “File” tab, then on “Help“. You’ll find the Excel bit version in the “About Microsoft Excel” section.
- Excel 2013 and newer: Click on the “File” tab, then on “Account“. Finally, click on “About Excel“. A window will display with the Excel bit version and other information.
3- Should I choose Excel 32-bit or 64-bit?
Now that we know the differences between Excel 32-bit and 64-bit, let’s see how we can decide which version to install. You should just keep in mind that there is no better bit version; the best bit version is the version that suits your situation and your needs.
Here are some criteria that will help you to determine which bit version to choose, Excel 32-bit or 64 bit:
– Choose Excel 64-bit if:
- You have a 64-bit Windows, AND You usually work with large Excel workbooks that contain complex calculations and a lot of complex features such as Power Pivot, 3D Map, connections to external databases, etc.
- Or, you have a 64-bit Windows AND you’re developing add-ins for Excel. With the 64-bit version of Excel, you’ll be able to produce both versions for add-ins: 64-bit and 32-bit.
– Choose Excel 32-bit if:
- You have a 32-bit Windows (you can’t install 64-bit Office on a 32-bit Windows).
- Or you need to use 32-bit add-ins that don’t have a 64-bit version and therefore can’t be installed on a 64-bit Excel; no matter what the bit version of your Windows is.
- Or you need to use some 32-bit controls that don’t have a 64-bit version, e.g. Mscomctl.ocx and comctl.ocx controls; no matter what the bit version of your Windows is.
4- Can I convert Excel 32 bit to 64 bit or vice versa?
Microsoft doesn’t provide a way to convert Excel 32-bit to 64-bit or vice versa; so if you want to use an Excel version with a different bitness than the one already installed (i.e. you have Excel 32-bit and want to have Excel 64-bit, or conversely, you have Excel 64-bit and want to have Excel 32-bit), you’ll need to first uninstall the current version, then install the new one having the different bitness.
5- Can I have Excel 32-bit and 64-bit on the same computer?
The official answer from Microsoft is that it’s not possible to install Excel 32-bit and 64-bit on the same machine.
However, you can still install Excel 32-bit and 64-bit on the same device following one of these two ways:
– First method: Install and run the other Excel from a virtual machine (VirtualBox, VMware, etc).
– Second method (the tip is from StackExchange network):
- Pick two different Excel versions with different bitness (e.g. Excel 2021 64-bit and Excel 2019 32-bit).
- Then, first install the 64-bit version of Excel.
- After that, install the 32-bit of the other Excel version.
6- Can I install Excel 32 bit on a 64 bit Windows?
A 64-bit Windows can host 64-bit applications, as well as 32-bit ones. So, if you have a 64-bit Windows, you can definitely install Excel 32-bit on it.
7- Can I install Excel 64 bit on a 32 bit Windows?
Unlike Windows 64-bit, a 32-bit Windows can only host 32-bit applications. So, if you have a 32-bit Windows, you can’t install Excel 64-bit on it; only 32-bit Excel is allowed.
8- Is office key valid for both 32-bit and 64-bit?
The licence key for Office or Excel (if you got it as a standalone application) is valid for both 32-bit and 64-bit versions, as long as it is the same Office or Excel edition (home, professional, etc.). So, if you have a 32-bit Excel and want to install a 64-bit version instead, from the same edition, or vice versa, you can definitely use the same licence key.
9- Final thoughts
In this article, we discussed the differences between Excel 32-bit and 64-bit, which are the hosting platform compatibility, the amount of allowed memory, and the DEP security. We also learned how to know if we have 32-bit Excel or 64-bit, when to choose each one, and the possible installation scenarios for each.
Jeff Golden is an experienced IT specialist and web publisher that has worked in the IT industry since 2010, with a focus on Office applications.
On this website, Jeff shares his insights and expertise on the different Office applications, especially Word and Excel.