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

Git Merge Unrelated Histories Without Losing Commits

You've cloned a repo, added a new remote, and now you need to merge two branches that don'...

Python Memory Error When Processing Large Files: Troubleshooting Checklist

You're running a Python script that reads a large file—maybe a CSV with millions of rows, a l...

Git Push Rejected Non Fast Forward: Troubleshooting Checklist

Fix Firefox Secure Connection Failed Due to Proxy Settings

If you see "Secure Connection Failed" in Firefox and suspect a proxy is involved, you'...

Windows Security App Won't Open in Safe Mode: Fixes

If you’re in Safe Mode and the Windows Security app refuses to open—showing a blank window, crash...