Fix Excel Freezing or Crashing When Changing Cell Color
Question details
Microsoft 365 Excel experiences significant lag, freezing for over 30 seconds, or outright crashing when the user attempts to apply or change cell colors.

- Product
- Microsoft Excel
- Device & OS
- Windows
- Scenario
- Applying formatting and changing cell background colors in spreadsheets.
- Observed behavior
- Excel becomes unresponsive for an extended period (30+ seconds) or crashes entirely when clicking the cell-color control.
Before making any system or application changes, ensure you have saved your current spreadsheet progress to prevent data loss in case Excel crashes during troubleshooting.
Run Excel in Safe Mode and Disable Add-ins
Starting Excel in Safe Mode bypasses third-party add-ins, helping identify if a faulty extension is causing the color-fill freeze.
Many Excel performance issues, including freezing during formatting, are caused by incompatible COM add-ins or leftover extensions from older Office installations.
Press Windows + R to open the Run dialog box. Type 'excel /safe' and press Enter to launch Excel in Safe Mode.
Open a new or existing spreadsheet and try changing a cell color. If the issue is gone, the problem is likely an add-in.
Click on File > Options > Add-ins.
Select 'COM Add-ins' from the Manage drop-down menu at the bottom and click 'Go'. Uncheck all add-ins and click OK. Restart Excel normally to see if the freeze is resolved.

Perform an Online Repair of Office
If Safe Mode doesn't help, the Office installation files might be corrupted and need to be repaired using the built-in Windows tool.
Perform a Clean Boot and Update Display Drivers
Background applications or outdated graphics drivers can conflict with Excel's rendering processes, causing it to hang when displaying colors.
Experience Crash-Free Spreadsheets with WPS Office
If Excel continues to freeze during simple tasks like changing cell colors, consider switching to WPS Office. It is a highly compatible, lightweight, and free alternative that runs smoothly even on older hardware, ensuring your workflow remains uninterrupted.
- 1. Download the Installer: Visit the official WPS Office website and download the free installation package.
- 2. Install WPS Office: Run the installer and follow the quick setup instructions to install the suite on your device.
- 3. Open Your Excel Files: Launch WPS Spreadsheet and open your existing .xlsx files directly. You can now edit and format cells without lagging.

Frequently Asked Questions
Why does Excel only freeze when applying formatting or cell colors?
Formatting features like applying cell colors rely on graphics hardware acceleration and specific display drivers. If these drivers are outdated or conflicting with a background process, Excel may hang while trying to render the visual change.
Does hardware acceleration affect Excel performance?
Yes, hardware graphics acceleration can sometimes cause display issues or freezing in Office apps. You can try disabling it in Excel by going to File > Options > Advanced > Display, and checking 'Disable hardware graphics acceleration'.
Will an online repair delete my Excel files?
No, performing a Microsoft Office Online Repair only fixes the application's underlying installation files. Your personal spreadsheets, macros, and data will remain untouched on your hard drive.




