The error "Automatic HK downloading is disabled or failed" occurs when MakeMKV cannot reach its update servers to download the "Hashed Keys" (HK) necessary for decrypting specific discs, particularly 4K UHD titles. This is often due to aggressive ISP security, geo-blocking, or outdated software configurations. Why This Happens
Geo-Blocking: The HK update servers (e.g., hkdata.fairuse.org) are sometimes hosted in regions like the Russian Federation, which may be blocked by your router's security settings or your ISP.
Security Software: Many "Threat Management" systems (like those on Ubiquiti gear or Xfinity apps) flag the key server as a malicious source and drop the connection.
DNS Issues: Some DNS providers, including Cloudflare or standard ISP DNS, may fail to resolve the specific HK hostnames correctly. Immediate Solutions If you encounter this error, try these fixes in order: makemkv automatic hk downloading is disabled or failed upd
Use a VPN: This is the most common fix. Connecting to a VPN bypasses local ISP or regional blocks. You may need to try different exit locations if the first one doesn't work.
Change DNS Settings: Switch your system or router DNS to Google DNS (8.8.8.8 and 8.8.4.4) to avoid ISP-level resolution failures.
Manual Host Entry (Advanced): You can force your computer to find the server by adding the IP address directly to your hosts file. File Path: C:\Windows\system32\drivers\etc\hosts The error "Automatic HK downloading is disabled or
Line to add: 185.84.108.20 hkdata.crabdance.com hkdata.fairuse.org.
Whitelist the Domain: If you use security-focused hardware like Ubiquiti, specifically allow traffic to and from hkdata.fairuse.org. Manual Workaround (The keydb.cfg Method)
If automatic downloading remains broken, you can manually provide keys to MakeMKV: Automatic HK download disabled or failed - www.makemkv.com MakeMKV sends a hash of the disc’s volume
From reverse engineering and developer notes:
https://makemkv.com/hk/getkey/.false or the HTTP request returns a non-200 status (including 403, 404, timeout).The system uses no authentication—only disc hashes—so it’s lightweight but entirely dependent on the central server’s availability.
_private_data.tar from the MakeMKV data directory.https://www.makemkv.com/hk/hashedkeys.txtIncorrect system time breaks HTTPS handshakes:
sudo timedatectl set-ntp trueThe feature might be explicitly disabled in the settings.
Ctrl + P).