
Fix 'Port Already Allocated' Error in Windows Defender on Windows 10
You may see an error like "Windows Defender Firewall cannot use port X because it is already allo...
Software troubleshooting desk

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

When Windows Search stops working—missing files, slow results, or no results at all—it's usually ...

You click the Windows Security icon in the taskbar or open it from Settings, but nothing happens—...

You're testing a new web app or extension, and it fails to load or behaves oddly. Often the culpr...

When you try to connect to a Linux server with PuTTY and get "connection refused," it usually mea...

You open the Start menu, search for Windows Security, and nothing shows up. Or you see a message ...