
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...

If Windows Security won't open—clicking the icon or searching for it does nothing—you're not alon...

If you see error 0x80073cf3 when opening the Microsoft Store after a Windows update, the store ap...

If Windows Terminal feels sluggish when launched from VS Code—delays opening, slow typing, or lag...

You try to connect to a remote machine and see: Remote Desktop failed to start permission d...

If you installed Ubuntu alongside Windows and now see an activation warning, you're not alone. Wi...