On Windows (run as admin):

makemkvcon64.exe --debug=stdout info

Look for lines containing “Downloading HK”.

The “MakeMKV automatic HK downloading is disabled or failed” error is almost always fixable by:

Because AACS key distribution relies on frequent updates, keeping this mechanism functional is essential for ripping recent Blu-ray discs. When automatic download fails permanently, the manual HK method from the MakeMKV forum remains a reliable fallback.

For ongoing issues, the best resource is the MakeMKV Forum → “General” or “Blu-ray” sections, where developers and power users share the latest HK files and troubleshooting advice.

Last updated: 2025 – reflects MakeMKV version 1.17.x and later.

The "Automatic HK downloading is disabled or failed" error in MakeMKV occurs when the software cannot reach the server to download Hash Keys (HK). These keys are essential for decrypting and identifying newer Blu-ray or 4K UHD discs not already in your local database.

The failure is usually caused by network-level blocks, as the key servers are located in regions (such as Russia) that many ISPs, firewalls, and DNS services proactively block. Top Solutions to Fix HK Downloading

Use a VPN: Connecting to a VPN is the most reliable way to bypass ISP or regional blocks. Users have reported success with services like ProtonVPN or Norton VPN.

Change Your DNS: Some DNS providers, like Cloudflare (1.1.1.1), may block the key servers. Switching to Google DNS (8.8.8.8 or 8.8.4.4) often resolves the issue.

Check "Enable Internet Access": Ensure the box for "Enable internet access" is checked under the General tab in MakeMKV's preferences.

Modify Host Files (Advanced): You can force a connection by adding the key server IP to your system's hosts file. Users on the MakeMKV forums suggest adding 185.84.108.20 hkdata.fairuse.org to the file located at C:\Windows\System32\drivers\etc\hosts.

Manual Key Installation: If automatic downloading continues to fail, you can manually download the sdf.dat.gz file from hkdata.fairuse.org/svq/sdf.dat.gz and place it in your MakeMKV data folder (typically C:\Users\[Username]\.MakeMKV). Troubleshooting Common Causes Description Geo-Blocking

Many routers (like Ubiquiti) or ISPs block traffic to/from Russia, where the keys are hosted. Firewall/Antivirus

Threat protection software often flags the key server as a "malicious" or "unauthorized" connection. Server Downtime

Occasional server outages or maintenance can cause temporary failures that usually resolve within 24 hours.

Are you seeing this error on a specific 4K UHD title or across all of your Blu-ray discs? Automatic HK downloading is disabled or failed.

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:

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

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

The error "MakeMKV automatic HK downloading is disabled or failed" is a sign that your software cannot reach its decryption key server. In 90% of cases, it is solved by:

In the remaining 10%, manually placing the sdf.dat file (Method 4) will restore functionality.

Do not let this error stop your ripping workflow. It is a minor roadblock, not a permanent failure. Once resolved, MakeMKV will once again decrypt and convert your discs without complaint.

Last updated: October 2025. This guide applies to MakeMKV v1.17.x and higher.

In the quiet, hum-filled corner of his office, slid the latest 4K UHD Blu-ray into his disc drive. He was ready for a movie night, but the screen flickered not with a film, but with a cold, red-lettered error: "Automatic HK downloading is disabled or failed."

Elias knew the drill. This wasn't just a glitch; it was a digital roadblock. The "HK" (Hash Key) file is the secret handshake needed to decrypt newer UHD discs, and MakeMKV usually downloads it automatically from a server in the Russian Federation. The Investigation

First, Elias checked the obvious. He opened his settings to ensure "Enable internet access" was checked. It was. He tried a restart, but the error persisted. He realized his ISP or router might be blocking the connection to the Russian servers. The Workarounds

Determined to watch his movie, Elias considered three paths favored by the MakeMKV Forum community:

The VPN Route: He fired up a VPN, hoping to bypass his ISP's geo-blocking. Changing his virtual location often allowed the software to reach the "forbidden" servers.

The Hotspot Trick: He disconnected his PC from the home Wi-Fi and tethered it to his phone's cellular data. Sometimes, mobile networks haven't implemented the same strict blocks as home ISPs.

The Manual Intervention: For a more permanent fix, he looked at editing his computer's hosts file to manually point hkdata.fairuse.org to its known IP address, or manually downloading the sdf.dat.gz file and dropping it directly into his MakeMKV data folder.

As the blue progress bar finally began to crawl across the screen, Elias leaned back. The "handshake" was complete, the keys were exchanged, and the hum of the disc drive turned from a stutter into a steady, successful purr. Automatic HK download disabled or failed - www.makemkv.com

If automatic downloading remains broken (e.g., you are on an offline computer or behind a strict corporate proxy), you can manually place the key database.

Place the downloaded sdf.dat file into this folder, overwriting any existing one.

Restart MakeMKV. The error should now be gone.

The message “Automatic HK downloading is disabled or failed” is not a critical software bug but a configuration or network issue preventing MakeMKV from fetching decryption keys. In most cases, enabling web access in preferences or manually placing hashedkeys.txt resolves it. Persistent failures point to aggressive security software or a corporate proxy.

If none of the above work, report the exact log lines to the MakeMKV forums – the developer is highly responsive to HK-related issues.

Report prepared by: [Assistant]
Date: [Current date]
Software version referenced: MakeMKV 1.17.x

The "Automatic HK downloading is disabled or failed" error in MakeMKV usually occurs because the software is unable to reach its update servers to download the hashed keys (HK) required for decrypting specific discs, particularly 4K UHD titles. Primary Fixes Automatic HK downloading is disabled or failed.

This request appears to relate to a specific error message or status found within MakeMKV, a popular program for ripping Blu-ray and DVD discs.

The message "Automatic HK downloading is disabled or failed" typically refers to the software's ability to access the Hash Key (HK) database. This database is used to fetch disc decryption keys automatically, saving the user from manually locating and entering keys for obscure or new discs.

Here is content explaining the error and how to resolve it.

From reverse engineering and developer notes:

The system uses no authentication—only disc hashes—so it’s lightweight but entirely dependent on the central server’s availability.

Makemkv Automatic Hk Downloading Is Disabled Or Failed Upd May 2026

On Windows (run as admin):

makemkvcon64.exe --debug=stdout info