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

Fix GitHub Actions Cache Action Permission Denied Error

How to Fix Cloudflare Error 521: Web Server Is Down

If you're seeing Cloudflare error 521, it means Cloudflare can't establish a TCP connection to yo...

Fix npm install Peer Dependency Conflicts

When you run npm install and see warnings like UNMET PEER DEPENDENCY or...

Fix PuTTY Connection Refused After Server Restart

You restart your server, open PuTTY, and see "Connection refused". This is a com...

Setup kubectl Context for Multiple Clusters

If you work with several Kubernetes clusters, you've probably seen errors like 'Unable to connect...

Windows Update Cleanup Stuck: Troubleshooting Checklist

You run Disk Cleanup, select Windows Update Cleanup, and it hangs for hours. Thi...