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

How to Allow an App Through Windows Defender Firewall

If an app can't connect to the internet or network, Windows Defender Firewall may be blocking it....

Fix Cloudflare DNS Not Resolving on Android

If you've set Cloudflare's 1.1.1.1 DNS on your Android device but websites won't load or you see ...

Fix WinRAR Checksum Error on Windows 10

If you see a 'Checksum error' or 'CRC failed' message when extracting a RAR or ZIP file in WinRAR...

DNS Error Troubleshooting Checklist for CMD

When you can't reach a website but your internet connection seems fine, DNS errors are a common c...

SSH Host Key Verification Failed: Troubleshooting Checklist

When you connect to a remote server via SSH and see "WARNING: REMOTE HOST IDENTIFICATION HAS CHAN...

Fix SSH 504 Gateway Timeout in Windows Terminal