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

Fix Chrome Certificate Error: Invalid Authority with Proxy Settings

You open Chrome and see NET::ERR_CERT_AUTHORITY_INVALID on every site, even trus...

Fix Windows 11 WiFi No Internet Due to Antivirus Blocking

If your Windows 11 PC shows full WiFi bars but no internet access, your antivirus might be blocki...

Python Virtual Environment Not Activating: Common Fixes

You run source venv/bin/activate (or venv\Scripts\activate on Windows) ...

Checklist for Pushing Large Files with Git

You've likely hit this: you try to push a commit, and Git rejects it because a file is too la...

Fixing Python Memory Error with Large CSV Files in Pandas

You try to read a large CSV file with pandas read_csv and hit a MemoryError. This happens when th...

Fix Python Permission Denied When Running pip install -r requirements.txt