Fix Microsoft 365 Apps Freezing When Opening or Saving Files
Question details
Users experience unresponsiveness and freezing in Microsoft 365 applications when attempting to open existing files or save new documents.

- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Opening existing documents or saving new files in Word, Excel, and PowerPoint.
- Observed behavior
- Microsoft 365 applications completely freeze and stop responding during the file open or save process, whereas other non-Office software on the same device functions normally.
Ensure you have a stable internet connection if you need to run the online repair tool, and verify that all other applications are working normally to isolate the issue to Microsoft 365.
Run an Online Repair for Microsoft 365
Running the built-in Microsoft 365 online repair tool can fix corrupted installation files that frequently cause applications to freeze during file operations.
The Online Repair is more comprehensive than the Quick Repair as it reinstalls the Office suite components without affecting your personal files.
Click the Start menu, type 'Control Panel' in the search bar, and hit Enter.
Under 'Programs', click on 'Uninstall a program' to open the list of installed software.
Locate and select 'Microsoft 365' in the list, then click 'Change' at the top of the window.
Select 'Online Repair' from the dialog box and click 'Repair'. Follow the on-screen instructions to complete the process.
Update Microsoft 365 Applications
Installing the latest updates ensures you have the most recent bug fixes and stability improvements that may resolve the freezing issue.
Perform a Clean Boot to Check for Conflicts
A clean boot starts your system with a minimal set of drivers and startup programs to determine if background software is interfering with Microsoft 365.
Use WPS Office to Open and Save Your Files Without Freezing
If Microsoft 365 continues to freeze or crash, consider switching to WPS Office. It perfectly handles document processing with high stability, ensuring you can open, edit, and save your work without interruption.

Frequently Asked Questions
Why do Microsoft 365 apps freeze only when opening or saving files?
This issue often occurs due to corrupted Office installation files, outdated software versions, or interference from third-party background applications such as antivirus programs that scan files during the save/open process.
Will I lose my files if I run an Online Repair for Microsoft 365?
No, running an Online Repair only restores and fixes the application files. Your personal documents, spreadsheets, and presentations will remain safe and unaffected.
How can I tell if a background program is causing Office to freeze?
By performing a clean boot, you disable non-essential background software. If Microsoft 365 works normally after a clean boot, it confirms that one of the disabled third-party apps was causing the conflict.
What should I do if updating and repairing Microsoft 365 doesn't work?
If the issue persists, you may need to completely uninstall and reinstall Microsoft 365. Alternatively, you can use a free, compatible software suite like WPS Office to continue opening and saving your documents without disruption.




