
Fix 'Port Already Allocated' Error in Windows Defender
You open Windows Defender Security Center or try to run a scan, and you see an error saying a por...
Software troubleshooting desk

You open Windows Defender Security Center or try to run a scan, and you see an error saying a por...

You may see a Windows Security proxy error when trying to access the internet after a network cha...

When you run Windows Defender commands in Command Prompt as an administrator, you might see an er...

You try to install Windows updates and see error 0x80070005, often with a message like "Access de...

When Command Prompt stops working as expected—won't open, returns odd errors, or commands don't r...

When you open the Microsoft Store on Windows 10 and see “Service Unavailable” or “Something went ...