If you’ve opened MakeMKV to rip a Blu-ray and encountered the error message you aren’t alone. This is a common hiccup that prevents the software from decrypting newer discs because it cannot fetch the necessary "Hashed Keys" (HK) from the central server.
The MakeMKV "HK" server is temporarily offline or undergoing maintenance. makemkv automatic hk downloading is disabled or failed upd
Your internal MakeMKV settings have "Enable Internet Access" unchecked. How to Fix the "HK Downloading Failed" Error 1. Enable Internet Access in Settings If you’ve opened MakeMKV to rip a Blu-ray