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

How to Fix Windows Defender 404 Not Found Error

If you see a "404 Not Found" error when opening Windows Defender, it often means a required file ...

How to Fix MySQL Connection Refused Error

When you see "connection refused" while trying to connect to MySQL, it usually means the server i...

BitLocker Recovery Key Not Accepted? Fix TPM Issues

You enter your BitLocker recovery key, but Windows rejects it. This often points to a TPM (Truste...

Reset Remote Desktop Port to Default 3389

After changing the Remote Desktop (RDP) port for security reasons, you may need to revert to the ...

Fix Windows Defender Service Not Running

If you see "Windows Defender service not running" or a red warning in Security Center, the underl...

Fix 'git remote add origin repository not found' Error