Now that we’ve identified the possible causes, let’s walk through the solutions to fix this error.
1. Sign Out and Sign In
Signing out and then signing back in allows Microsoft Teams to refresh session cookies, which may have become outdated or corrupted, potentially causing this issue.
2. Disable the Antivirus Software
Third-party antivirus software can sometimes block the background services or network access that Microsoft Teams relies on. This can prevent the app from launching, signing in, or syncing properly. To rule out interference from your security software, temporarily disable your antivirus and check if Teams functions as expected. Note: If Teams works after disabling the antivirus, add it to your antivirus’s exceptions list, then re-enable protection immediately.
3. Clear Microsoft Teams Cache
Cache is a temporary storage system used by applications to save frequently accessed data. This helps improve performance by allowing the app to quickly retrieve information without needing to constantly fetch it from the server. However, if these cache files become corrupted or outdated, they can lead to unexpected issues within the app. Clearing the Microsoft Teams cache can help resolve such problems by forcing the app to regenerate fresh data.
4. Run Teams as Administrator
Running the program as an administrator gives Microsoft Teams the necessary permissions to access or modify system-level files and settings that may be restricted under normal user access. If you haven’t already tried this, running Teams as an administrator might help resolve the issue.
5. Reinstall Microsoft Teams
Microsoft Teams can sometimes run into issues due to incomplete updates, corrupted files, or misconfigured settings from previous installations. Reinstalling the app removes all problematic data and installs a clean, updated version. This process also restores the app to its default settings, clears leftover conflicts, and ensures full compatibility with system components. Reinstalling is especially helpful if none of the earlier methods resolved the issue.
