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

Remote Desktop Connection Refused Troubleshooting Checklist

When you see 'Remote Desktop connection refused' or 'Remote Desktop can't connect to the remote c...

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 Outlook High CPU Usage and Not Responding

You open Outlook, and it takes forever to load, the CPU meter spikes, or the window freezes and s...

How to Fix Windows Update Stuck at 0%

You click Check for updates, and the progress bar sits at 0% for minutes or hours. This is a comm...

Fix SSH Permission Denied (publickey) on Raspberry Pi