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

SSH Public Key Permission Denied vs Password Authentication: Fixes

You can SSH into a server using a password, but when you try the same connection with a public ke...

Checklist for Windows Security Module Errors

When Windows Security (formerly Windows Defender) throws module errors, you might see messages li...

Fix Microsoft Teams Version Mismatch Update Required Error

Understanding the Error

When you see 'version mismatch update required' in Microsoft Team...

UFW Port Closed Despite Allow Rule: Fixes

You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...

How to Reset Microsoft Edge Browser Settings

When Microsoft Edge starts misbehaving—slow loading, frequent crashes, or unexpected pop-ups—rese...

How to Fix Windows Security Invalid Configuration Error

If you see a message that says "Invalid configuration" when opening Windows Security, the app usu...