“Office (64-bit) couldn’t be installed” error when you install Office 2013 or Office 365

You'll get this error message if you try to install the 64-bit version of Office 2013 or Office 365 or an Office stand-alone application like Visio on a computer that already has a 32-bit version of Office.

Office (64-bit) couldn't be installed because you have 32-bit programs installed error message

Note   The preceding dialog box says that Office (64-bit) couldn't be installed because 32-bit Office programs are installed. There's a corresponding dialog box that says that Office (32-bit) couldn't be installed if you have 64-bit Office programs installed.

If you want to switch to a different type, you’ll have to uninstall the other version, reinstall it, and then install Office 2013 or Office 365. For example, if you have the 32-bit version of Office 2010 and you want to install the 64-bit version of Office 2013, you’ll need to uninstall Office 2010, re-install the 64-bit version of Office 2010, and then install the 64-bit version of Office 2013.

I you don't want to mix versions and you only want to have the 64-bit version of Office 2013 or Office 365 on your computer, you'll have to uninstall the other version first.

To help you decide which version to install, see Choose the 32-bit or 64-bit version of Office 2013.

You can’t mix 32-bit and 64-bit versions of Office.

When it comes to 32-bit and 64-bit versions of Office, you have to choose one or the other—installing a combination won’t work. You can mix versions like Office 2010 and Office 2013 – as long as both are 32-bit or 64-bit.

So, if you’re installing Office 2013 alongside another version of Office, install the type that matches what you already have. For example, if you already have the 32-bit version of Office 2010 installed, install the 32-bit version of Office 2013.

If you want to switch from 32-bit to 64-bit, you’ll have to uninstall the 32-bit version and then install the 64-bit version. Likewise, if you want to switch from 64-bit to 32-bit, you’ll need to uninstall the 64-bit version and then install the 32-bit version.

For example, if you have the 32-bit version of Office 2010 and you want to install the 64-bit version of Office 2013 and keep Office 2010 on the same computer, you’ll need to uninstall Office 2010, re-install the 64-bit version of Office 2010, and then install the 64-bit version of Office 2013.

To help you decide which version to install, see Choose the 32-bit or 64-bit version of Office.

Uninstall Office

Use the appropriate uninstall instructions for the version of Office you want to uninstall.

Install Office

Note   If you only want to have Office 2013 or Office 365 on your computer, you don’t need to reinstall the older version you uninstalled in the previous step.

To reinstall Office 2010 or Office 2007, use your original Office DVD and product key.

To install the 32-bit or 64-bit version of Office 2013 or Office 365, follow these steps
  1. Sign in to your account page.

  2. Select Language and install options.

    Language and install options
  3. Select Additional install options.

    Additional install options
  4. For the version, select Office (32-bit) or Office (64-bit), and then select Install.

    Choose 32- or 64-bit

Applies To: Access 2013, Excel 2013, Outlook 2013, Publisher 2013, Visio 2013, Word 2013, OneNote 2013, PowerPoint 2013, Project Professional 2013, Project 2013 Standard, Visio 2016 Preview



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