
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 you've installed an offline version of the Microsoft Store (for example, on a PC without inter...

You try to run a PowerShell command and get an authentication failed error. The message might say...

When you try to run Enter-PSSession or Invoke-Command against a remote ...

When launching Microsoft Teams on Windows 10, you may see an error stating that a port is already...

If you see error 0x8004de40 when syncing OneDrive on Ubuntu, the sync client usually fails to aut...