
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...

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

If you see a connection refused error when opening Windows Security (Windows Def...

When you try to start a local server or application and see an error like "port already in use" o...

If Windows Defender fails to start, you might see an error like "Windows Defender service won't s...

If you see error 0x80073cf9 when trying to install or update an app from the Windows Store, it us...

If the Task Scheduler service won't start, scheduled tasks won't run and you'll likely see an err...