
How to Resolve Port Conflicts Using Command Prompt
If you see an error like "port already in use" or "address already in use" when starting a server...

If you see an error like "port already in use" or "address already in use" when starting a server...

When you try to connect to a PostgreSQL server from pgAdmin and get a 'permission denied'...

You try to open your Outlook data file (PST) and get an error that the file is locked, or Outlook...

After a Windows update, you might find OneDrive stuck on "Processing changes" or showing sync err...

You may see an error like "Windows Defender Firewall cannot use port X because it is already allo...

You try to update Windows, but the update hangs or fails with an activation error. The update may...