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

Fix Nginx 502 Bad Gateway for WordPress

If you see a 502 Bad Gateway error when visiting your WordPress site running on Nginx, it usually...

WinRAR Checksum Error Recovery Checklist

If you see a "Checksum error" in WinRAR, it usually means the archive is damaged or incomplete. T...

Microsoft Teams Crash Troubleshooting Checklist

If Microsoft Teams keeps crashing on you—closing without warning, freezing, or refusing to start—...

Fix Windows Security High CPU Usage After Update

After a Windows update, you might notice the Windows Security process (Antimalware Service Execut...

Fix CMD Service Unavailable Due to Group Policy

Situation

You open Command Prompt and see an error like "Command Prompt has been disabled...

Fix 'java' Not Recognized in Command Prompt on Windows

When you type java -version or javac in Command Prompt and get 'jav...