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

Fix Windows Defender 404 Not Found in Group Policy

When you open the Group Policy Management Editor and navigate to Computer Configuration > Adminis...

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

How to Reset BitLocker Settings Without Recovery Key

If you've lost your BitLocker recovery key and need to reset the settings to regain access to you...

Fix PowerShell Auto-Start 'Permission Denied' Error

You set a PowerShell script to run automatically at startup, but instead of running, you see a 'P...

How to Fix Chrome Profile Token Expired Sign In Again Error

You open Chrome and see a message: 'Your profile token has expired. Sign in again.' This usually ...

UFW Deny Port But Still Accessible: Fixes and Checks

You set a UFW deny rule for a specific port, but the port remains accessible from outside. This i...