
Fix 'Invalid Configuration' Error in Command Prompt on Windows 10
When you open Command Prompt and see an 'invalid configuration' message, it usually means a setti...

When you open Command Prompt and see an 'invalid configuration' message, it usually means a setti...

If you see "Windows Defender service not running" or a red warning in Security Center, the underl...

You see 'Token expired' in the Windows Defender event log or a notification that the service didn...

You open Windows Defender, but it stays on a loading screen with a spinning circle—often stuck on...

If you see a "token expired" error when using Windows Search, it usually means the search index h...

You restart your PC after a Windows Update, only to see “Configuration failed. Reverting changes....