Plan the device installation change
Uninstalling Microsoft 365 removes Office applications from the selected computer. It does not automatically delete documents you created, end a Microsoft subscription or remotely sign every other device out. Identify exactly which computer and applications are being removed, especially when the PC is shared, managed by an organization or about to be retired.
Check whether you have any applications that depend on a local Office component and verify the replacement workflow before uninstalling on a critical work device.
Inventory locally stored and synced documents
Locate documents stored on the computer separately from those held in OneDrive or SharePoint. Finish saving open work, identify any offline folders and ensure that the copies you need exist independently of the current Office installation. If documents are synced, verify a representative file through the service rather than treating a sync icon as final proof.
Uninstalling is a software change, not a reliable data-backup process. The easiest point to repair a missing or unsynced file is before the applications are removed.
Keep the reinstall and license pathway available
If you intend to install Microsoft 365 again, record which Microsoft or work account owns the subscription or license and use Microsoft’s current reinstall instructions. If you are removing the apps from one of several computers, review device licensing separately from the installer; do not assume an uninstall cancels recurring charges.
Sign-out is a different decision: it affects an Office session and licensing state while the software stays installed. See the separate sign-out guide if access control, not disk removal, is your goal.
Keep billing separate from uninstalling Microsoft 365
Treat billing separately from uninstalling Microsoft 365; record any paid plan and purchase channel because removing software or a device does not necessarily cancel a subscription.
Authentication changes caused by uninstalling Microsoft 365
You can reinstall later if your license/subscription allows it. Keep the Microsoft 365 uninstall reversible until the replacement setup is usable. Use uninstalling Microsoft 365 to clean up trusted-device access deliberately, then confirm the remaining account can still be recovered without the old device.
Shared access to test after uninstalling Microsoft 365
Local documents remain where they were saved unless you separately delete them. Create an independent copy for the Microsoft 365 uninstall, then open a sample before treating that copy as usable. Finish uninstalling Microsoft 365 with an external access test rather than relying on the device you just changed; verify both sign-in and one important shared dependency.
Protect documents and check activation before uninstalling
Save local documents, templates or offline files you need and confirm the account that owns the Microsoft 365 subscription. Uninstalling the apps from one device should be treated as a device action; subscription renewal and cloud-account access are separate decisions. After removal, verify that important files open from the workflow you plan to use next and check the Microsoft account if an activation needs to be freed or reassigned.
Uninstalling is a software-removal decision
This article is about removing Microsoft 365 applications from a device. It separates the local software change from the subscription, cloud account, and files that may continue to exist independently of that installation.
If you only want to end the signed-in session, use the sign-out guide instead. Keeping sign-out and uninstalling separate avoids treating two different device actions as if they had the same outcome.
Related consequence reports for “Before you uninstall Microsoft 365: what to check first”
- What happens if you uninstall Microsoft 365?Software & Licenses
- What happens if you sign out of Microsoft 365?Software & Licenses
- What happens if you switch from paid Microsoft 365 to free web apps?Software & Licenses
Continue in this topic
Find more distinct decisions and source-backed consequence reports in the Software & Licenses topic hub.
Uninstall is not sign-out
This guide focuses on removing the Office applications and checking local files. For account licensing, session state or remote sign-out, see the separate sign-out guide. Read the related, differently focused guide.
Official sources for “Before you uninstall Microsoft 365: what to check first”
- Microsoft Support — Uninstall Microsoft 365Official source ↗
- Microsoft Support — Microsoft 365 vs OfficeOfficial source ↗
- Microsoft Support — Sign out of OfficeOfficial source ↗