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

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...

Fix OneDrive Command Line Sync Not Responding

If you run OneDrive from the command line and it hangs or shows no output, the issue is often a s...

Outlook Settings Reset Not Working: Practical Fixes

Fix Windows Security Error 0x80070643 on Ubuntu Dual Boot

If you see error code 0x80070643 when running Windows Security or Windows Update on a dual-boot s...

Fix Chrome DNS Error Caused by a Corrupted User Profile

If Chrome suddenly fails to load websites with a DNS error but other browsers work fine, a corrup...

Fix Outlook Connection Refused After Password Change

If you changed your email password and now Outlook shows 'connection refused' or 'unable to conne...