Choose the 64-bit or 32-bit version of Office (2024)

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Choose the 64-bit or 32-bit version of Office (1)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 a 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 Office may perform better in these cases.

  • You’re working with extremely large pictures, videos, or animations in PowerPoint. The 64-bit version of Office 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.

  • Your organization requires Hardware Data Execution Prevention (DEP) for Office applications. DEP is a set of hardware and software technologies that some organizations use to enhance security. For 64-bit installs DEP will always be enforced, while on 32-bit installs you’ll need to configure DEP by using Group Policy settings.

  • You’re developing in-house Office solutions like add-ins or document-level customization. Using the 64-bit version of Office lets you deliver a 64-bit version of those solutions as well as a 32-bit version. In-house Office solution developers should have access to the 64-bit Office 2016 for testing and update these solutions.

Choose the 64-bit or 32-bit version of Office (2)Reasons to choose the 32-bit version

Note:If you have 32-bit Windows, you can only install 32-bit Office. If you have 64-bit Windows, you can install 32-bit Office or 64-bit Office.

IT Professionals and developers, in particular, should also review the following situations where the 32-bit version of Office 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 Office 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 Office 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 Windows API 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 bits. However, this might not be possible in rare cases where there is no 64-bit API to Declare.

  • 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 the recommended option, but if needed you can continue to run them with 32-bit Outlook only, as well.

  • 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 Office installed.

  • You're using SharePoint Server 2010 and you need the Edit in Datasheet view. You can continue to use the Edit in Datasheet view functionality in SharePoint Server 2010 with 32-bit Office.

  • 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.

Choose the 64-bit or 32-bit version of Office (2024)

FAQs

Choose the 64-bit or 32-bit version of Office? ›

I would recommend going with 64bit and reasons behind that as below: In general, the main benefit of using the 64-bit version of Office, is that it can use access memory when needed. With the 32-bit version of Office, the application can only use up to 2GB of memory, even when more is available in your computer.

Should I use 64-bit or 32-bit Office? ›

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).

How to check 32 or 64-bit Office? ›

About Office: What version of Office am I using?
  1. Open any Office application, such as Word or Excel, and select Account. ...
  2. Under Product Information, you'll find your Office product name and, in some cases, the full version number. ...
  3. For more information, such as the bit-version, choose About Excel.

How do I choose between 32-bit and 64-bit? ›

It boils down to which Windows version you use and which software you want to use, or rather which kind of processor is required. You should always use 64-bit versions if your system has a 64-bit architecture. This will ensure your programs run smoothly and quickly even when used intensively and in parallel.

How can I change Office from 32-bit to 64-bit? ›

If you want to switch from 32-bit to 64-bit, you must first uninstall the previous version. You can do this through the Control Panel. Just look for “Uninstall a program” or “Add or Remove Programs,” depending on your Windows version. After uninstalling, you can proceed with installing the new 64-bit version.

Can you have both 32-bit and 64-bit offices? ›

Microsoft does not support the side-by-side installation of 32-bit and 64-bit Microsoft Office or their dependent components.

How do I choose a 32-bit Office? ›

32-bit is the right choice when:
  1. You have 32-bit COM Add-ins with no 64-bit alternative.
  2. You use 32-bit controls with no 64-bit alternative.
  3. Your VBA code uses Declare statements.
  4. You have 32-bit MAPI applications for Outlook.
  5. You're activating a 32-bit OLE server or object.

How can I tell if I have 32-bit or 64-bit? ›

Select the Start button, then select Settings > System > About . At the right, under Device specifications, see System type.

How to tell if Outlook is 64 or 32-bit? ›

The Outlook version and build number is under Product Information. If you need to know whether you're using the 32-bit version or the 64-bit version of Outlook, select About Outlook. About Outlook contains additional details about your version.

How to change 64-bit to 32-bit? ›

You can't. There's no way to change the "bitness" of any version of Windows from 32-bit to 64-bit, or vice versa. The only way to can get what you want is by doing a clean installation.

What is the biggest advantage of 64-bit over 32-bit? ›

Using 64 bit operating system with 64 bit processer, the system can perform an increased number of calculations per second. As a result, it increases the processing power and makes a computer run faster. This is limited in case of 32 bit operating system. You can multi-task, switch between various application etc.

What is the basic difference between 32-bit and 64-bit operating system? ›

The main difference lies in their memory-handling capabilities and the number of bits they can process at once. A 32-bit OS can access up to 4GB of RAM, while a 64-bit OS can access significantly more memory.

What happens if you download 32-bit on 64-bit? ›

Can I run 32-bit programs on a 64-bit computer? Most programs made for the 32-bit version of Windows will work on the 64-bit version of Windows except for most Antivirus programs. Device drivers that are made for the 32-bit version of Windows will not work correctly on a computer running a 64-bit version of Windows.

Which is better Office 32-bit or Office 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).

How to check Microsoft Office version 32-bit or 64-bit? ›

Click the File tab in the top left corner. A drop-down menu will appear. Find the Account or Help tab, and click on it. On the right side of the screen, you'll find details about your installation, such as the version number.

Can I downgrade from Office 64-bit to 32-bit? ›

Uninstall the existing Office 64-Bit and install the 32-Bit version. To do this, log on to www.office.com and select [Install apps], [More installation options], [View apps and devices] and under Version select “32-Bit”. After a click on [Office Install] it starts. You don't have to back up any data beforehand!

Is Office 32-bit slower than 64-bit? ›

64-bit Office can use more virtual address space ("memory") if needed, than can 32-bit Office. 64-bit Office and Office apps do not automatically run faster or slower than on 32-bit Office but slightly speed-wise they can differ.

Should I play 32-bit or 64-bit? ›

Heavy programs, like video editors and high-end games, run better in their 64-bit versions. Multi-tasking becomes more efficient, too. On a 64-bit system, if you have a choice between 32-bit and 64-bit apps, always go with 64-bit for best performance.

Is Outlook 32 or 64-bit? ›

In Outlook, go to 'File'. In the column on the left, if you see 'Help', then you have Outlook 2010. 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.

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