If you’ve recently opened MakeMKV to rip a new 4K UHD Blu-ray and were greeted by the error message you aren't alone. This specific error prevents the software from decrypting the disc because it can't access the necessary "Hashed Keys" (HK) required for newer titles.
The most common culprit is that the "Web Access" feature has been toggled off. Open MakeMKV. Go to (or click the wrench icon). Navigate to the General tab. Ensure the box labeled "Allow internet access" is checked. Restart the application and try loading the disc again. Step 2: Manually Update the HK Database
Once the file is in the directory, MakeMKV will prioritize the local file over the web download. Step 3: Check Firewall and VPNs makemkv automatic hk downloading is disabled or failed
A firewall or antivirus is blocking MakeMKV from reaching the internet.
In MakeMKV, go to Preferences > General and look at the "MakeMKV data directory" path (usually in your Documents or AppData folder). If you’ve recently opened MakeMKV to rip a
Visit the MakeMKV forums or trusted community repositories to find the _keys.db or the latest hashed key list.
The primary host for the keys is temporarily offline. Open MakeMKV
Add an exception for makemkv.exe or makemkvcon.exe .