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Aug 9, 2024 · A computer with the more advanced 64-bit processor can run both 64-bit and 32-bit operating systems and software. However, if a 64-bit computer has a 32-bit operating system installed, it can only run 32-bit software.
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- Overview
- I know which version I want. How do I install it?
- Reasons to choose the 64-bit version
- Reasons to choose the 32-bit version
- Ready to install?
- I know I want the 64-bit version. How do I install it?
- See Also
If you're not sure which Office product you have, see What version of Office am I using? Otherwise, pick your version of Office from below.
Important You can't run add-ins or MDE files compiled in a 32-bit version of Office on a 64-bit version of Office and vice versa.
The 64-bit version of Office 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.
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 Office 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 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.
•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 updating these solutions.
The following computer systems can only install 32-bit Office. 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
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.
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.
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.
Which Windows operating system am I running?
Which version of Windows should I install: the 32-bit version or the 64-bit version? To install a 64-bit version of Windows, you need a CPU that's capable of running a 64-bit version of Windows. The benefits of using a 64-bit operating system are most apparent when you have a large amount of random access memory (RAM) installed on your computer ...
Nov 2, 2010 · Yes, you generally should use 64-bit apps, where possible. Combining 32-bit and 64-bit apps is a pain, and never a good idea. It is usually only done by necessity (going back to my first point).
Aug 8, 2009 · This explains the following: benefits & limitations introduced by 64-bit, what to consider when installing the 64-bit version, benchmark results and user experience changes. All things here do apply to Windows 7 as well.
Jul 27, 2023 · 32-bit systems utilize data in 32-bit pieces, while 64-bit systems utilize data in 64-bit pieces. In general, the more data that can be processed at once, the faster the system can operate.
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Oct 14, 2023 · Microsoft recommends users upgrade to a corresponding architecture of Windows 10; if you have a 32-bit version of Windows 7 or 8 currently installed, you should choose 32-bit Windows 10 and...
