Knowledge base for software setup, errors, and daily tool work.

Fix Windows Security Real-Time Protection Not Working

If you see a yellow warning in Windows Security that says "Real-time protection is off" or it tur...

Fix PuTTY Connection Refused After Server Restart

You restart your server, open PuTTY, and see "Connection refused". This is a com...

Fix Remote Desktop Certificate Error 0x80090322

When connecting to a remote desktop, you might see error 0x80090322. This usually appears as a me...

Fix Windows Defender Conflicts with Third-Party Antivirus

You may see error messages like "Windows Defender can't start due to a dependency conflict" or no...

Fix Windows Activation Service Unavailable Without Product Key

You see 'Windows activation service unavailable' and you don't have the product key. This usually...

Fix 'ffmpeg command not found' in PHP exec()