How to Fix Excel Crashing Randomly in Microsoft 365
Question details
Users need troubleshooting steps to resolve an issue where Microsoft Excel for Microsoft 365 crashes randomly, despite having already tried basic fixes like reinstalling Office and updating Windows.

- Product
- Microsoft Excel for Microsoft 365
- Device & OS
- Windows
- Scenario
- Working with workbooks or leaving Excel running in the background.
- Observed behavior
- The Excel application randomly crashes or closes unexpectedly for certain users without a specific trigger or error message.
Ensure you have saved all open work and verify that you have Windows administrator privileges, as you will need them to modify system configurations and create new user profiles.
Perform a Windows Clean Boot
A clean boot starts Windows with a minimal set of drivers and startup programs to help identify if a background service is causing Excel to crash.
Since standard Office repairs and reinstallations have not resolved the random crashes, a third-party application or a background Windows service may be conflicting with Excel.
Performing a clean boot safely disables these non-essential services so you can isolate the root cause.
Press the Windows key + R to open the Run dialog, type 'msconfig', and press Enter to open the System Configuration utility.
Navigate to the 'Services' tab, check the box for 'Hide all Microsoft services' at the bottom, and then click the 'Disable all' button.
Switch to the 'Startup' tab and click 'Open Task Manager'. In Task Manager, right-click each enabled startup item and select 'Disable'.
Close Task Manager, click 'OK' on the System Configuration window, and restart your computer. Open Excel to see if the random crashes still occur.
Create a New Windows User Profile
Creating a fresh local user profile helps determine if the current user's system profile is corrupted and causing application instability.
Submit a Support Ticket in Microsoft 365 Admin Center
If local troubleshooting fails, escalating the issue to Microsoft's support team allows them to collect logs and investigate on a deeper level.
Switch to WPS Office for a Stable, Crash-Free Experience
If Microsoft Excel continues to crash and disrupt your workflow despite advanced troubleshooting, consider switching to WPS Office. It is a highly stable, lightweight, and free alternative that offers seamless compatibility with your existing Excel spreadsheets, ensuring you can keep working without interruption.
- 1. Download WPS Office: Visit the official WPS website and download the free installation package for your Windows PC.
- 2. Install the Software: Run the lightweight installer. The process takes only a few minutes and will not conflict with existing software.
- 3. Open Your Spreadsheets: Launch WPS Spreadsheet and easily open your existing .xlsx files to continue your work without random crashes.

Frequently Asked Questions
Why does Excel continue to crash even after I have reinstalled it?
Reinstalling Excel often leaves behind user-specific settings, corrupted registry keys, and add-ins. If the root cause is a corrupted Windows user profile, a conflicting background service, or a damaged system file, a simple reinstallation will not fix the random crashes.
Will performing a Windows clean boot delete my files or data?
No, a clean boot does not delete any of your personal files, documents, or applications. It simply restarts your computer with only essential Microsoft services running to help you identify if a third-party app is causing conflicts.
How can I check if a specific Excel add-in is causing the application to crash?
You can check for problematic add-ins by starting Excel in Safe Mode. Press and hold the 'Ctrl' key while clicking the Excel shortcut, and confirm you want to start in Safe Mode. If Excel runs stably, an add-in is likely the culprit. You can then disable add-ins one by one via File > Options > Add-ins to find the exact cause.
What information should I provide when opening a Microsoft 365 support ticket?
When opening a ticket, specify that you have already tried updating Windows, reinstalling Office, performing a clean boot, and creating a new user profile. Also, provide a screenshot of the File > Account page in Excel and clearly mention if the crash happens during a specific action or randomly.




