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

Fix Windows Defender Not Opening Error 404

You try to open Windows Defender and get an error 404 – the page or resource can't be found. This...

Fix OneDrive Permission Denied Error 0x80070005

You see a 'Permission Denied' error with code 0x80070005 when trying to open or sync files in One...

Fix BitLocker Path Not Found on External Drive

When you connect a BitLocker-encrypted external drive and see "path not found" or "The system can...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

MongoDB Authentication Failed Error 18: Causes and Fixes

When you see MongoDB AuthenticationFailed (error code 18), it means the server r...

MongoDB Compass Connection Refused: Step-by-Step Fixes

When you try to connect MongoDB Compass to your database and get 'connection refused', it usually...