If you have an Office 365 Home, Personal, or University subscription, you now have the option to install Office 2016 or Office 2013 on your PC. You should only install Office 2013 if you’re having specific compatibility issues with your Office 2016 upgrade. If you connect to an Exchange 2007 mailbox, you might want to stay on Office 2013 or even uninstall Office 2016 and reinstall Office 2013. If you have Office 2013 standalone apps that are incompatible with Office 2016, you may want to stay on Office 2016 and take advantage of the Special offer for customers with Office 2016 and Office 2013 standalone applications.
Tip: You can create and share documents between Office 2016 and Office 2013 without worrying about compatibility issues. If you create a document using an Office 2016 application and you send it to someone who’s using Office 2013, the recipient can still open and edit the document in the corresponding Office application. The same is true for documents going from Office 2013 to Office 2016.
How to reinstall Office 2013 with an Office 365 subscription
Sign in to your My Account page and deactivate the Office 2016 iinstallation.
To install Office 2013, on your My Account page choose Install.
Choose Language and install options.
Choose Additional install options.
In the drop-down list under the 32-bit and 64-bit versions of Office section, choose Office 2013 (32-bit) or Office 2013 (64-bit), and then choose Install.
Click Run or the equivalent depending on the browser you’re using.
Tip: If you didn’t remove Office 2016 before attempting to reinstall Office 2013, you’ll get an error that detects a newer version of Office is installed on your device. You’ll need to uninstall Office 2016 before you can continue.
The install will occur in the background. How long it takes depends on your connection. When you see You’re good to go, choose All done.
After you reinstall Office 2013, you’ll eventually receive notifications to upgrade to Office 2016.
You can dismiss the notification, and it will disappear until the next time you launch an Office 2013 application. You can also permanently disable the notification by using an easy fix.
Ensure you have the latest Office updates by following the steps in the section, "Get Office 2013 updates" in Install Office updates.
Download this easy fix to have it set the registry key for you. Setting this registry key will disable the "Get the New Office" upgrade prompt.
Note: Go to Can't find Office applications in Windows 10, Windows 8, or Windows 7? if you run into a problem after installing or reinstalling Office 2013.
How to reinstall a one-time purchase of Office 2013
If you bought and installed Office 2016 as a one-time purchase to replace Office 2013 Home & Student or Office 2013 Home & Business, you can uninstall Office 2016 and reinstall your copy of Office 2013.
Note: If you're not sure what version of Office you have, refer to What version of Office am I using?
If you're interested in upgrading your one-time purchase of Office 2013, have a look at what you'll get with Office 365.