Corrupted cache is the #1 cause. Slack rebuilds it automatically.

Do you see a specific (e.g., "Slack has encountered a fatal error")?

If nothing works, contact Slack support with Windows Event Viewer logs (look for Application Errors for Slack.exe).

If you are using the version from the Microsoft Store, try uninstalling it and downloading the directly from Slack's website , or vice versa. Different versions can behave differently with Windows 11's architecture. 5. Adjust Compatibility Mode Right-click the Slack shortcut on your desktop. Select Properties > Compatibility tab.

Windows 11 updates sometimes break GPU rendering for Electron apps like Slack.

If Slack crashes before you can reach settings:

Sometimes Slack struggles with your computer's graphics drivers. Go to > Troubleshooting . Click Disable Hardware Acceleration . The app will restart; check if the stability improves. 3. Check for Windows & Driver Updates

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