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 Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

How to Abort a Git Pull Merge Conflict Safely

You ran git pull and got hit with merge conflicts. Maybe you weren't ready to merge,...

How to Fix Git Push Rejected Non Fast Forward Merge

You run git push and see an error: rejected – non-fast-forward. This happen...

Apache Service Not Starting on Linux: Troubleshooting Steps

When Apache fails to start on Linux, the service typically exits with an error or hangs. This gui...

How to Fix Microsoft Teams Microphone Not Working on Windows 10

If your microphone isn't working in Microsoft Teams on Windows 10, you're not alone. This issue o...