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

How to Fix Remote Desktop 502 Bad Gateway Errors Related to Firewall Settings

If you're seeing a 502 Bad Gateway error when trying to connect to a remote desk...

Fix Windows Security High CPU Usage and Slow PC

If your PC feels sluggish and Task Manager shows Windows Security (or Antimalware Service Executa...

How to Clear Cache and Reset Settings in Microsoft Teams

If Microsoft Teams is acting up—stuck on loading, failing to sync, or showing garbled UI—a corrup...

Fix Nginx Config Test Failure After Adding SSL Certificate

You added an SSL certificate to your Nginx server block, ran nginx -t, and got an er...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Caused by Antivirus

When Chrome shows ERR_TUNNEL_CONNECTION_FAILED, it usually means a secure tunnel...

BitLocker Recovery Key Not Accepted: Fix Authentication Failed Error