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

Step-by-Step Windows Activation Configuration Guide

If Windows shows an activation warning or you are setting up a new PC, follow these steps to conf...

Fix GitHub Actions Docker Push Permission Denied

Fix Windows Activation DNS Error After Network Change

If you recently changed networks (e.g., moved from home to office, switched ISPs, or changed rout...

Fix Windows Terminal Service Unavailable After Update

After a Windows update, you might see an error saying the Terminal Service is unavailable. This u...

Fix Windows Defender 504 Gateway Timeout & Permission Denied Errors

You open Windows Defender Security Center and see "504 Gateway Timeout" or "Permission Denied" er...

How to Fix a 502 Bad Gateway in Chrome by Clearing Cache

If you see a 502 Bad Gateway error in Chrome, it usually means the server you're...