Immediate Fix
The most effective way to resolve Microsoft Teams crashing after an update is to clear the application’s local cache. Corrupted temporary files from the previous version often cause conflicts with the new deployment.
To clear the New Teams cache, close the application completely and ensure it is not running in the system tray. Use the following steps:
- Press Windows + R on your keyboard to open the Run dialog.
- Enter the following path and click OK:
%localappdata%\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeamsDelete every file and folder inside this directory. Restart Microsoft Teams. The application will rebuild these files from scratch, resolving most “Crash to Desktop” (CTD) issues.
Technical Explanation
Teams updates frequently modify the underlying Electron or WebView2 framework. When the application launches, it attempts to map existing session data to the new executable logic. If there is a schema mismatch in the local database files, the application triggers a fatal exception.
| Common Cause | Technical Impact | Primary Solution |
|---|---|---|
| Cache Schema Mismatch | Old .json files fail to validate against new API calls. | Manual Cache Deletion |
| GPU Driver Conflict | Hardware acceleration fails on updated UI rendering. | Driver Update / Disable GPU Accel |
| Zombied Processes | Ghost msteams.exe instances lock the local database. | Task Manager Process Kill |
Additionally, background processes from the previous version may remain active in the kernel. This prevents the new version from accessing the necessary read/write permissions for the local data folders, leading to an immediate crash upon startup.
Alternative Methods
Repair via Windows Settings
If clearing the cache manually does not work, you can use the built-in Windows Repair tool. This verifies the integrity of the app package without deleting your personal settings.
Navigate to Settings > Apps > Installed Apps. Find Microsoft Teams, click the three dots (…), and select Advanced options. Click the Repair button. If the crashing persists, try the Reset button.
Update WebView2 Runtime
The “New Teams” client relies heavily on the Microsoft Edge WebView2 runtime. If this component is outdated or corrupted, Teams will fail to render the login screen and crash. Download the latest WebView2 Evergreen Bootstrapper from Microsoft’s official site to ensure your environment is up to date.
Disable Compatibility Mode
Sometimes, Windows automatically applies “Compatibility Mode” to the Teams executable after a failed launch. This can actually cause more crashes. Right-click the Teams shortcut, go to Properties > Compatibility, and ensure that “Run this program in compatibility mode for” is unchecked.