← All Kali Issues
apt
Hash sum mismatch
P Package
High
🔴 Error Message
E: Failed to fetch, Hash Sum mismatch
📖 What This Means
Downloaded package index is corrupted or was modified in transit by a proxy.
🔧 Step-by-Step Fix
- Clean lists: sudo rm -rf /var/lib/apt/lists/*
- Clean cache: sudo apt clean
- Update: sudo apt update
- Try different mirror
- Disable proxy if using one