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

Fix 'Windows Security Failed to Start Access Denied' Error

You click on Windows Security and see 'Windows Security failed to start. Access denied.' This usu...

Clear Windows Defender Cache via Command Line

If Windows Defender (Microsoft Defender Antivirus) is acting up—showing outdated threat definitio...

Fix Windows Security Rate Limit Error & Permission Denied

When Windows Security throws a 'rate limit exceeded' or 'permission denied' error, it usually mea...

Fix PostgreSQL Password Authentication Failed in pg_hba.conf

When you see psql: FATAL: password authentication failed for user "username", it usu...

Fix Windows Activation Failed After Update

After a Windows update, you might see an activation error like "Windows failed to start" or "Acti...

Fix VSCode Extension Host Terminated Error Code 0

What does this error mean?

When you see 'Extension host terminated unexpectedly with erro...