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

Fix Windows Defender Sync Error 504 Gateway Timeout

If you see a "504 Gateway Timeout" error when Windows Defender tries to sync, it usually means th...

SSH Key Permissions and Ownership: A Troubleshooting Checklist

If you're seeing "Permissions 0644 for 'id_rsa' are too open" or "Bad owner or permissions" when ...

Fix Remote Desktop High CPU Usage Caused by Antivirus

You're connected to a remote desktop and the session becomes sluggish. Task Manager shows high CP...

Windows Activation Module Not Found After Update: Fix

After a recent Windows update, you may see an error that the activation module is missing or not ...

Fix Windows Activation Blank Screen After Update

After a Windows update, some users see only a blank screen at login. The system may be unresponsi...

Fix Remote Desktop Permission Denied Error 0x80004005