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

How to Kill a Process Using a Port in Command Prompt

When you try to start a local server or application and see an error like "port already in use" o...

Debug SSH Public Key Authentication Failure: Step-by-Step

You're trying to SSH into a server with a public key, but you get "Permission denied (publickey)"...

Fix kubectl Apply Forbidden in AKS: Permission Denied

How to Reset DNS Cache for Microsoft Store Issues

If the Microsoft Store won't load, shows error 0x80131500, or downloads stall, a corrupted DNS ca...

Fix Microsoft Store Download Stuck at 0 Bytes

When you try to download an app or game from the Microsoft Store and the progress bar stays at 0 ...

Windows Security Firewall Configuration Checklist

If you've ever enabled the Windows Firewall and suddenly lost access to a shared printer or could...