
Windows Security Troubleshooting Checklist
If Windows security features aren't working as expected—like Windows Defender won't start, update...

If Windows security features aren't working as expected—like Windows Defender won't start, update...

If you see a DNS error in Windows Security—like 'DNS resolution failed' or 'We can't connect to t...

You might see a 'version mismatch' or 'permission denied' error when opening Windows Security, ru...

You run Invoke-WebRequest in PowerShell and get a 504 Gateway Timeout

If you see an error like 'running scripts is disabled on this system' when trying to run a PowerS...

After a Windows or PowerShell update, you may see errors like “Invalid configuration” or “Configu...