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. While 32-bit applications can work with add-ins, they can use up a system's available virtual address space. You're using add-ins with Outlook, Excel, or other Office apps. See Excel specifications and limits, Data Model specification and limits, and Memory usage in the 32-bit edition of Excel. The 64-bit version of Microsoft 365 may perform better in these cases. 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. 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:
Also, 64-bit applications can access more memory than 32-bit applications (up to 18.4 million Petabytes). Reasons to choose the 64-bit versionĬomputers running 64-bit versions of Windows generally have more resources such as processing power and memory, than their 32-bit predecessors. If you're still not sure which version, 32-bit or 64-bit is a better choice for you, see the section below. See “Office (64-bit or 32-bit) couldn’t be installed” error.
The same is true if you installed the 32-bit version, but want to install the 64-bit version. WARNING: Office 2010 64-bit is NOT compatible with WIndows XP 64.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. Select 64-Bit to begin the download for the 64-bit installer. (Do NOT click on Download) Select the Advanced Options that is listed below the Download link.Ĩ. (You can order a backup DVD this way as well)ħ. Put in your Product Key, select Language and enter the correct Captcha.Ħ. Sign into or create a new Windows Live account.ĥ.
Uninstall all versions of Microsoft office and make sure none are listed in Programs and Features.Ĥ. Ensure Office 64-bit is what you need, there are some limitations, review them here: Ģ. To install Office 64 bit on a compatible 64-Bit OS please follow the following steps.ġ. As many may have realized the Office 2010 installer shipping with Dell systems (even on 64-bit OS's) will only install Office 32 bit.
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