Office 2010/64-bit and Acrobat X

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UPDATE: Acrobat X, Version 10.1 now supports the 64-bit version of Microsoft Office 2010.

The information below is no longer accurate.

I’ve been hearing a lot of concerns from customers that Acrobat X doesn’t support the 64-bit version of Microsoft Office 2010. At the end of this post is a link to a Microsoft technote that provides some insight on this issue.

One thing to point out, the PDF Makers which add the Acrobat Ribbon to Office 2010 are built as “Office add-ins”. Acrobat add-ins to Office are 32-bit and hence will not work with 64-bit edition of Office 2010. We decided not to support 64-bit Office since Microsoft’s recommendation and the default installation for Office 2010 is 32-bit.

The 32-bit version of Office 2010 is the recommended option for most users, because it prevents potential compatibility issues with other 32-bit applications, specifically third-party add-ins that are available only for 32-bit operating systems.

NOTE The 64-bit version of Office 2010 is not compatible with any other 32-bit version of Office programs. As a result, you must first uninstall all 32-bit versions of Office programs before you install the 64-bit version of Office 2010. The Office 2010 disc includes both 32- and 64-bit versions of Office 2010. To install 64-bit Office 2010, you must run Setup.exe from the x64 folder. For more information, see Install the 64-bit version of Office.

  • ActiveX controls library, ComCtl Any solutions that use these controls do not work. No good alternatives are available for some of these controls.
  • Third-party ActiveX controls and add-ins – None of these work with the 64-bit version of Office.

If you want to be able to use the Acrobat Ribbon in Office 2010, you will need to install the 32-bit version of Office 2010, which is the Microsoft recommendation.