'%3e%3cpath%20d='M8%200C12.4183%200%2016%203.58172%2016%208C16%2012.4183%2012.4183%2016%208%2016C3.58172%2016%200%2012.4183%200%208C0%203.58172%203.58172%200%208%200ZM11.6162%204.38379C11.2257%203.99337%2010.5927%203.99338%2010.2021%204.38379L8%206.58594L5.79785%204.38379C5.40732%203.99334%204.77429%203.99329%204.38379%204.38379C3.99331%204.77429%203.99335%205.40733%204.38379%205.79785L6.58594%208L4.38379%2010.2021C3.99348%2010.5927%203.99341%2011.2257%204.38379%2011.6162C4.77426%2012.0066%205.40734%2012.0065%205.79785%2011.6162L8%209.41406L10.2021%2011.6162C10.5927%2012.0066%2011.2257%2012.0067%2011.6162%2011.6162C12.0067%2011.2257%2012.0066%2010.5927%2011.6162%2010.2021L9.41406%208L11.6162%205.79785C12.0066%205.40735%2012.0066%204.77429%2011.6162%204.38379Z'%20fill='%23080E17'%20fill-opacity='0.46'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_3761_713'%3e%3crect%20width='16'%20height='16'%20fill='white'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e)
How to Fix Office 365 Cannot Run, Repair, Uninstall, or Reinstall
Question details
The user is completely unable to run, open documents in, repair, uninstall, or reinstall Microsoft Office 365 due to persistent errors.
- Product
- Microsoft Office 365
- Device & OS
- not provided
- Scenario
- Attempting to fix or remove a corrupted Microsoft Office installation after applications fail to launch.
- Observed behavior
- Office applications fail to open documents, and all standard attempts to Quick Repair, uninstall, and reinstall the software result in error messages.
Before beginning the repair or complete uninstallation process, ensure you have your Microsoft account login credentials and product keys available, as you will need them to reinstall and reactivate Office.
Use Microsoft Support and Recovery Assistant (SaRA)
Use this official Microsoft tool to deeply scan and forcibly remove a corrupted Office installation when the standard Control Panel uninstaller fails.
When standard uninstallation or Quick Repair fails, it often means the Windows registry or core installation files are severely corrupted. The Microsoft Support and Recovery Assistant completely wipes these stubborn files so you can start fresh.
Navigate to the official Microsoft Support website and download the Microsoft Support and Recovery Assistant.
Launch the downloaded SetupProd_OffScrub.exe file and follow the on-screen prompts to install the tool.
Open the application, select the version of Office you want to uninstall, and click Next.
Once the tool finishes removing the Office installation, restart your computer. Log back into your Microsoft account online to reinstall a fresh copy of Office 365.
Launch Office Applications in Safe Mode
Run Office in Safe Mode to check if a faulty add-in is preventing the applications from launching or repairing.
Switch to WPS Office for a Hassle-Free Experience
If your Microsoft Office installation is corrupted and refuses to repair or uninstall, you can immediately regain productivity by switching to WPS Office. It is a highly compatible, fast-installing suite that avoids heavy registry dependencies.
- 1. Download the Installer: Visit the WPS Office website and download the free, lightweight installer package.
- 2. Quick Installation: Run the installer. WPS Office sets up in seconds without complicated registry processes.
- 3. Open Your Files: Double-click your existing documents, spreadsheets, or presentations to open them perfectly in WPS.
Frequently Asked Questions
Why is Office 365 failing to repair or uninstall through the Control Panel?
This usually occurs when core installation files or Windows Registry keys related to Office become corrupted or are mistakenly deleted by antivirus software. When the standard uninstaller cannot find these expected files, the process crashes or produces an error.
Will using the Microsoft Support and Recovery Assistant delete my personal files?
No. Uninstalling Microsoft Office, even with the deep-cleaning Recovery Assistant, only removes the application files. Your personal documents, spreadsheets, and presentations will remain completely safe on your local drive or OneDrive.
What should I do if Safe Mode does not fix the issue?
If Office still fails to open even in Safe Mode, the issue is not related to add-ins. You will need to proceed with a complete uninstallation using the Microsoft Support and Recovery Assistant, followed by a fresh installation from your Microsoft account.
