
Fix Windows Security Cannot Connect to the App
When you see 'Windows Security cannot connect to the app' while trying to open Windows Security o...
Software troubleshooting desk

When you see 'Windows Security cannot connect to the app' while trying to open Windows Security o...

When Command Prompt settings become corrupted, you may see unusual colors, missing text, incorrec...

After a Windows or Microsoft 365 update, Outlook may fail to open—no window appears, or it crashe...

You've configured Group Policy to enable Windows Defender, but it remains off or shows as managed...

You restart your PC to finish installing updates, but instead of completing, Windows Update gets ...

When you see the error "DNS probe finished no internet" in a browser or Command Prompt, your devi...