MakeMKV (optical disc ripping software) Commonly seen when: Opening a Blu-ray disc that requires an HK (Host Key) update to unlock AACS encryption.
Find a reputable source for a keys.db file (the MakeMKV forums are the official hub for this). makemkv automatic hk downloading is disabled or failed
It appears the update server is unreachable, or the local key file is corrupted. I was able to resolve this by manually downloading the latest exo file from the official forums and placing it in the MakeMKV data directory. MakeMKV (optical disc ripping software) Commonly seen when:
In the field, you can enter a mirror link (often found on the MakeMKV "UHD FAQ" forum thread). Note: Only use URLs from the official forum to avoid malware. makemkv automatic hk downloading is disabled or failed