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

How to Fix High Memory Usage from Windows Activation

If you notice your PC running slow and Task Manager shows high memory usage (often 50% or more) w...

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 Windows Search Not Working Due to Invalid Configuration

If Windows Search stops returning results or shows errors like "Search isn't working" or "No resu...

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

Task Scheduler SSL Error Setup Guide: Fix Common Certificate Issues

When a scheduled task that connects to a remote server (e.g., for file transfers, API calls, or d...

How to Fix Remote Desktop Black Screen After Connecting

You connect to a remote PC via RDP, authentication succeeds, but you're greeted with a black scre...