
Fix 'Port Already in Use' Error with Windows Defender Firewall
You try to start a local service or application, and it fails with an error like 'port already in...
Software troubleshooting desk

You try to start a local service or application, and it fails with an error like 'port already in...

You try to sign in or join a meeting in Microsoft Teams, and you see a network error: per...

If you see a message in Windows Security that says something like "Security module not found" or ...

You click Check for updates, and Windows sits there spinning forever—sometimes for hours—before s...

After a Chrome update, you might notice that the browser no longer starts automatically when you ...

You see a sync error in Windows Security that says something like “Something went wrong. Try to s...