How to Uninstall ‌Microsoft Office 365?

Microsoft Office 365—now branded Microsoft 365—isn’t a single program but a bundle of desktop apps (Word, Excel, Outlook, Teams, OneDrive, and more) plus background licensing, auto-update, and cloud-sync services. All of these parts hook into Windows at different levels—services, scheduled tasks, registry hives, user profiles—so Windows’ own “Uninstall” button often misses pieces. Left-over stubs can block a fresh install or keep old licenses alive, which is why the suite has a reputation for being stubborn.

Below is a plain, repeatable process to get rid of every trace on a Windows 10/11 PC.

1. Close everything
   Shut Word, Excel, Outlook, Teams, and any Office pop-ups. Sign out inside one of the apps if you like (File → Account → Sign Out).
2. Pick your removal path a) Settings (fastest on Windows 11)
   • Press Windows + I → Apps → Installed apps.
   • Search “Microsoft 365” (or “Office 365”).
   • Click the three-dot menu → Uninstall → confirm.
   • Let the wizard finish and reboot when asked . b) Control Panel (works on every Windows)
   • Type “Control Panel” in the Start menu → open it → Programs → Programs and Features.
   • Find “Microsoft 365” in the list, select it, click Uninstall at the top, and follow each prompt until it disappears . c) Microsoft Support and Recovery Assistant (if the buttons above are gray or throw errors)
   • Download “SaRA” from Microsoft’s site, run it, choose the Office uninstall scenario, and let the tool complete the job .
3. Hand-clean the leftovers (optional but thorough)
   • Open File Explorer and delete any remaining folders:
   – C:\Program Files\Microsoft Office
   – C:\Program Files (x86)\Microsoft Office
   • Press Windows + R, type %LOCALAPPDATA%, and delete Microsoft\Office folders you find there.
   • If you’re comfortable with regedit, remove Microsoft Office keys under
   – HKEY_CURRENT_USER\Software\Microsoft\Office
   – HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office
   (Export a backup first.)
4. Restart the computer
   A reboot flushes locked files and registry hooks, giving the next installer a clean slate.

If you want to be absolutely certain nothing lingers, run PerfectUninstaller afterward; it scours the registry and file system for every last Office 365 trace and deletes them in one click.