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

Fix Windows Defender Error 502 Bad Gateway

You open Windows Security and see 'Error 502 – Bad Gateway.' This usually means Windows Defender ...

Fix 'Connection Refused' Errors in Command Prompt Due to Permissions

When you see 'connection refused' in Command Prompt, it usually means the remote server rejected ...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

Fix Chrome Authentication Failed After Password Change

If you changed your Google Account password and now Chrome says "authentication failed" when tryi...

Remote Desktop Version Mismatch: A Practical Checklist

You try to connect to a remote desktop, but instead of a successful login, you get an error about...

Fix Microsoft Store 504 Gateway Timeout Not Loading

When you open Microsoft Store and see a 504 Gateway Timeout error, the app may not load at all. T...