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With Office 2010, Microsoft advised most users to install the 32-bit version as opposed to the 74-bit version as the 64-bit version was incompatible with many add-ins.

Is this still the case with Office 2013, or is installing the 64-bit version finally the recommended course of action from Microsoft?

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    Depends on your needs. If you have a 32-bit Office Add-on that must be used, you have no choice, if you have no needs for an Office add-on then your free to use it. Microsoft's advice is the same as it always been.
    – Ramhound
    Feb 5, 2013 at 12:14
  • Not just add-ins, many applications use the Office Automation stuff which I believe requires the same architecture to work. Feb 5, 2013 at 12:17
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    Is it recommended is not constructive. Does Microsoft recommend has a clear-cut answer.
    – Dennis
    Feb 5, 2013 at 12:45

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From this articel from 2013

The 32-bit version of Office is installed by default. Even if your computer is running a 64-bit version of Windows, we recommend that you install the 32-bit version of Office, because it is more compatible with the applications and add-ins that work with Office. If you do want to install the 64-bit version of Office, you can do so by taking the following steps: Office 365 Home Premium Preview: Go to www.office.com/myaccount, click Languages and install options, and then click Additional install options. Other Office 365 plans: Log into your account at www.office365.com and choose the option to install the 64-bit version of Office. It is not possible to install both the 64-bit version and 32-bit versions of Office on the same computer.

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