
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 install or run a Chrome extension and get an "Access Denied" error wi...

When setting up OneDrive sync, you might see an error saying the sync port is already allocated. ...

When you open Windows Terminal and try to start a PowerShell profile, you might see an error like...

If you're seeing a 404 error in Microsoft Teams—often when trying to open a file, channel, or tab...

You try to install the latest Windows updates, but you get an error like "Permission denied" or "...