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

Checklist for Windows Update Stuck Issues

Windows Update can freeze at any stage—checking for updates, downloading, or installing. This che...

Fix Windows Update 504 Gateway Timeout on Windows 10

If you see a 504 Gateway Timeout error when running Windows Update on Windows 10, it usually mean...

Fix Windows Activation Module Not Found Error 0x8007007b

When you see "Windows activation module not found" with error code 0x8007007b, Windows cannot loc...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

Windows Activation 502 Bad Gateway: Troubleshooting Checklist

If you're seeing a '502 Bad Gateway' error when trying to activate Windows, the problem is usuall...

How to Fix Windows Security High Memory Usage

You open Task Manager and see Windows Security (or Antimalware Service Executable) using 500 MB o...