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To determine the version of MS Office currently installed on your computer, follow these steps:
1. Launch MS Word.
2. Click on the Account on the left side of the screen.
Note: If you don't see Account or you already have a file or document open, choose File from the menu, and then select either Account or Help from the list on the left.
If you have the latest version of Office installed, you will see Microsoft Office 365 ProPlus under Product Information / Subscription Product.
3. To get additional information such as whether you have a 32-bit or 64-bit version installed , click the About Word button.
If you have Office 2016 installed from a DVD, you will see the following:
If the steps above didn't work for you, you're likely using an older version of Office. To learn what version you have, see Find details for other versions of Office.