If you’ve recently tried to rip a 4K UHD disc using MakeMKV and ran into the error message you aren't alone. This is one of the most common hurdles for enthusiasts looking to digitize their physical media library.
"HK" stands for , a vital part of MakeMKV's decryption process. When you insert a protected Blu-ray (especially 4K UHD), MakeMKV tries to download the correct hashed key from an online server to unlock it. The "Automatic HK downloading is disabled or failed" message means that MakeMKV attempted to contact the server but was unable to perform this download, leaving the disc locked.
Keep a local copy of the keydb.cfg file in your data folder as a permanent safety net against server outages. To help tailor a specific solution, please let me know:
If auto-download still fails:
If the error persists, it is possible that the disc you are trying to rip is brand new and not yet supported by the current KEYDB.cfg file. makemkv automatic hk downloading is disabled or failed
The primary reason for this failure is that MakeMKV’s key servers (such as hkdata.fairuse.org or hkdata.crabdance.com ) are often located in regions—specifically Russia—that are frequently blocked by Western ISPs, routers, or firewalls.
Open MakeMKV, go to > Preferences > General , and note the Data directory path. Close MakeMKV.
If you use MakeMKV to back up your Blu-ray and UHD disc collection, you have likely encountered this frustrating error message:
. This usually happens because the servers are located in regions often blocked by Western ISPs or firewalls. Root Causes Geographic Blocking: The update servers ( hkdata.fairuse.org hkdata.crabdance.com If you’ve recently tried to rip a 4K
: Keep your internet connection active when inserting a brand-new Blu-ray release so the software can cache the profile immediately.
If MakeMKV is blocked, switch it to . Step 3: Configure a Custom SDF/HK Download Directory
: Local security software may flag the connection to the HK data domains as malicious. Incorrect Settings
The following solutions are listed from the simplest and most likely to succeed, to the more advanced. We recommend following them in order to resolve the error efficiently. When you insert a protected Blu-ray (especially 4K
Sometimes, the setting required for automatic downloads is simply turned off within the program interface. Open . Click on View in the top menu bar and select Preferences . Navigate to the General tab.
MakeMKV requires an active internet connection only for key retrieval. The ripping process itself works offline.
Look at the path (usually C:/Users/[YourName]/.MakeMKV on Windows).