Fix Microsoft 365 Apps Won't Open or Uninstall on Windows 10
Question details
The user is unable to open Microsoft Word or PowerPoint and encounters a streaming error when attempting to uninstall Microsoft 365.
- Product
- Microsoft 365
- Device & OS
- Windows 10
- Scenario
- Trying to open Office applications or completely uninstall Microsoft 365 from the system to perform a clean reinstallation.
- Observed behavior
- Office apps fail to open, and standard uninstallation via Windows Settings or Control Panel results in a streaming error that halts the removal process.
Ensure you have your Microsoft account credentials handy, as you will need them to log in, download, and reactivate your Microsoft 365 subscription after the complete removal.
Use the Microsoft Office Uninstall Support Tool
The most effective way to bypass streaming errors and completely remove corrupted Microsoft 365 installations is by using the official Support and Recovery Assistant.
Standard Windows uninstallation methods often fail when core Microsoft Office background services are corrupted. The dedicated uninstall support tool forces the removal of all associated registry keys and system files.
Navigate to the official Microsoft support website and download the Microsoft Support and Recovery Assistant (SaRA) uninstall tool.
Double-click the downloaded executable file to install and run the application. When prompted by the main menu, select 'Office & Office Apps' and choose the option to uninstall.
Select the specific version of Microsoft 365 or Office you want to remove from the list provided, and follow the on-screen prompts to proceed.
Once the tool finishes the removal process, completely restart your Windows 10 computer to clear any lingering temporary files.
Go to office.com, log in with your Microsoft account, select 'Install Office', and run the new setup file to reinstall the applications.
Verify and Remove Conflicting Office Versions via Control Panel
If the automated tool encounters issues, manually check for and remove multiple or conflicting installed versions of Office.
Switch to WPS Office for a Hassle-Free Experience
If Microsoft 365 streaming errors are disrupting your work and taking too long to fix, consider switching to WPS Office. It's a free, lightweight, and incredibly stable office suite that installs in seconds without relying on complex background streaming services.
Frequently Asked Questions
What causes a streaming error when uninstalling Microsoft 365?
Streaming errors usually occur when Office installation files become corrupted, or when background 'Click-to-Run' services fail to communicate properly with Microsoft's servers during the uninstallation or update process.
Will I lose my files if I completely uninstall Microsoft 365?
No, uninstalling Microsoft 365 only removes the software application files. Your personal documents, spreadsheets, and presentations saved locally on your computer or synced to OneDrive will remain completely untouched.
Can I use an alternative like WPS Office while my Microsoft 365 is broken?
Yes, you can install WPS Office for free to immediately open, edit, and save your existing Word, Excel, and PowerPoint files without formatting loss while you troubleshoot your Microsoft 365 installation.
What is the Microsoft Support and Recovery Assistant (SaRA)?
SaRA is a free diagnostic and repair desktop client provided by Microsoft that automatically fixes various Office, Microsoft 365, and Outlook problems, including stubborn uninstallation and activation issues.
