Office 2010 64 or 32 bit?


  • Hi Folks,

    I have two terminal servers, both 2008 r2 that I will be uninstalling Office 2003 on and re-installing office 2010 on  My question is should I install the 64 bit version since the server is 64 bit or the 32 bit version as the clients using it are all 32 bit? I'm guessing 64 bit, but want to be sure.

    Also if you know of an an article that walks you through installing office 2010 on terminal server 2008 r2 that would be great.


    Thank You,


    Robert Orthman
    Thursday, December 15, 2011 4:43 PM


  • Hi Bob,


    Processors that are 64-bit are becoming the standard for systems that range from servers to desktop computers. The 64-bit systems can use more virtual and physical memory than 32-bit systems. This lets users work with much larger data sets than they could previously, and to analyze and solve large computational problems. Microsoft Office 2010 introduces native 64-bit versions of Microsoft Office products to take advantage of this larger capacity. For example, this additional capacity is needed only by those Microsoft Excel users who require Excel spreadsheets that are larger than 2 gigabytes (GB). The 32-bit version of Office 2010 provides the same functionality and is also compatible with 32-bit add-ins. Therefore, the 32-bit version of Office 2010 is installed by default.


    Office 2010 also provides support for 32-bit Office 2010 applications that run on 64-bit Windows operating systems by using Windows-32-on-Windows-64 (WOW64). WOW64 is the x86 emulator that enables 32-bit Windows-based applications to run seamlessly on 64-bit Windows systems. Office 2010 lets users continue to use existing Microsoft ActiveX Controls, Component Object Model (COM) add-ins, and Visual Basic for Applications (VBA), which are primarily 32-bit because no 64-bit versions are available yet for many add-ins. Supporting 32-bit Office 2010 applications that run on 64-bit operating systems allows for better compatibility with controls, add-ins, and VBA.


    The recommendations for which edition of Office 2010 to install are as follows:

    • If users in your organization depend on existing extensions to Office, such as ActiveX controls, third-party add-ins, in-house solutions built on previous versions of Office, or 32-bit versions of programs that interface directly with Office, we recommend that you install 32-bit (x86) Office 2010 (the default installation) on computers that are running both 32-bit and 64-bit supported Windows operating systems.
    • If some users in your organization are Excel expert users who work with Excel spreadsheets that are larger than 2 gigabytes (GB), they can install the 64-bit (x64) edition of Office 2010. In addition, if you have in-house solution developers, we recommend that those developers have access to the 64-bit edition of Office 2010 so that they can test and update your in-house solutions on the 64-bit edition of Office 2010.


    For more information ,you can refer to these article:

    64-bit editions of Office 2010


    Plan to deploy Office 2010 in a Remote Desktop Services environment


    Technology changes life……

    Friday, December 16, 2011 10:24 AM