Deactivate an Office 365 install
If you have an Office 365 subscription, you can deactivate an Office 365 install that you're no longer using so you can install Office 365 on a different device. Deactivating an Office 365 install does not uninstall Office, nor does it remove Office documents. Deactivating an Office 365 install is different from canceling your Office 365 subscription.
Note: Because this process is done through your web browser, you can deactivate an Office 365 install from any device.
If you're not sure whether your Office 365 version is for home or business, see Office plans.
Office 365 Home, Personal, or University
From any computer, go to https://office.com/myaccount and sign in using your Microsoft account, if prompted.
Select the orange Install > button. (Don't worry, this doesn't install Office 365. )
Under Install information, locate the computer where you want to deactivate the install.
Select Deactivate Install to deactivate the Office 365 installs that you no longer use.
Office 365 for business
From any computer, go to https://portal.office.com/Account/#home and sign in using your work or school account, if prompted.
From the Install status tile, select Manage installs.
Under Install status, select Deactivate to deactivate the Office installs you no longer use.
After you deactivate an Office 365 install, you still can view and print documents from that device, but you won't be able to edit them or create new ones. Office 365 lets you know that the install is deactivated by showing Unlicensed Product errors. If you want to use Office 365 on the device, you'll need to reactivate Office 365 by signing in to your Office 365 account when prompted.
There is no way to deactivate Office Home & Student, Office Home & Business, Office Professional, or individual Office apps. Instead, you must reinstall and reactivate using the process described in Activate after reinstalling Office.