As a super famous and easy to use video player application on Windows, macOS, android, ios and even linux, VLC Media Player has been installed in the majority of the people who love seeing movies.

So, it’s natural that VLC Media Player is one of my favorite media player on computer. You can play almost all kinds of video in various formats, such as MP4, MKV, DVD, Audio CD, BD and most streaming protocols.


When I try to insert a Blu-ray disc into my brand new Blu-ray drive and play it with VLC, I am prompted with an alert – “No valid processing key found in AACS config file on VLC”. That is quite confusing for me. What is processing key? What is AACS config file?

I have done some research and found that VLC doesn’t support to play commercial DRM protected Blu-ray content and cos-protected DVDs. For Blu-ray disc, there are two popular privacy protections, they are AACS and BD+ (also called BD plus). That makes sense, the libbluray package can only help VLC to play no-commercial protected Blu-ray contents.

That is why you get the note “No valid processing key found in AACS config file”. In the tutorial, I will introduce some solutions to fix this “No valid processing key found in AACS config file” error and let VLC play any blu-ray movies disc, iso file or blu-ray folders on your computer.

#1 FIX “No valid processing key found in AACS config file on VLC” error with KEYS DATABASE and AACS DYNAMIC LIBRARY

By deploying some additional plugins and adding proper processing keys, VLC will turn to be able to play back AACS-encrypted Blu-ray disc. Unlike dealing with libaccs library, this operation is very easy though the detailed process varies between computer systems. Let’s start to fix the error.

Step 1 if your VLC Media Player is not in the latest version, upgrade it.

Step 2 Download KEYS DATABASE (KEYDB.cgf)and AACS DYNAMIC LIBRARY (libaacs.dll for Windows and libaccs.dylib for Mac) in the below colored box.

Wonder how to get your VLC 3.0 to play encrypted blu-ray discs? Here’s how.

You’ll need two files: keys database and AACS dynamic library.

Keys database
get the file UPDATED 25-03-2018!
Windows: put it in C:\ProgramData\aacs\
Mac OS X: put it in ~/Library/Preferences/aacs/ (create it if it does not exist)
Linux: put it in ~/.config/aacs/

AACS dynamic library
UPDATED 25-03-2018!
VLC 32 bit on Windows: put that file in your VLC directory
VLC 64 bit on Windows: put that file in your VLC directory
Mac OS X: put that file in /usr/local/lib/ directory (create it, if it does not exist)
Linux: install libaacs package using your distribution package manager.

mirrors: first | second

Step 3 Open user area at C:\Users\[your username].

Step 4 On the file explorer window, go to View tab then select show hidden files… under folder option. Then, open Appdata folder or create a folder and entitle it with “aacs”. Copy the downloaded KEYDB.cfg file into this folder.

Windows User Directory - View Hidden Items

Step 5 Go to “C:\Program Files” [Or “C:\Program Files (x86)” if you are running 32bit VLC on 64bit Windows]. Then go to VideoLAN > VLC, and move libaacsdll file into this folder.VLC Install Directory

Step 3 Copy KEYDB.cgf file into ~/Library/Preferences/aacs/ (create it if it does not exist).

Step 4 Right-click on VLC, choose “Show package contents” and put libaccs.dylib file in Contents/MacOS/lib/.

Now, technically speaking, you have got VLC on your computer play encrypted Blu-ray disc. Just insert a Blu-ray disc and launch VLC to play it.

Still can’t play your Blu-ray Discs? Since the above keys database and aacs dynamic library are lately updated in 25-03-2018 when is quite far ago, some new Blu-ray disc might not be supported. How to deal with it? Read the below methods.

#2 Play Blu-ray disc with Aiseesoft Blu-ray Player instead of VLC Media Player

Besides this no valid processing key in aacs config file error, you may come with many other error alerts when play Blu-ray disc especially encrypted Blu-ray disc with VLC Media Player. So, what is the best alternative to VLC for playing back Blu-ray contents? Aiseesoft Blu-ray Player is a versatile media player, whether you are a movie enthusiast or a casual viewer, this blu-ray player program can brings you cinematic entertainment. You can immerse yourself in lifelike visuals and crytstal-clear details. let the movie plot take your mind on a flight of fancy. With this blu-ray player, you can transform your living room into a incredible home theater, since you can play any commercial Blu-ray disc released in any regoin with it.

Note: Aiseesoft Blu-ray Player can only play 1080p blu-ray movie, for watching blu-ray disc movie in 4k, you can try to convert blu-ray disc to digital video in solution 3.

Watch AACS-Protected Blu-ray Disc with Blu-ray Ripper

With almost all needed keys and packages built-in, you don’t have to handle some complicated settings to get it play commercial Blu-ray contents (Blu-ray disc/folder/ISO file), no matter AACS, BD+, or Civania protected, ONE-CLICK to play them without hassle.

Download and Play your Blu-ray Disc NOW!

#3 Convert Blu-ray Disc to Digital and Protection-Free Video file

An other solution that you can appeal to is to get rid of AACS protection from the blu-ray movie and convert blu-ray to HD MKV, MP4, MOV, AVI. etc. Leawo Prof. Media will be the best choice for you to make it happen. With the embeded Blu-ray Ripper module, you can decrypt, rip and convert Blu-ray disc, Blu-ray folder and iSO image file to 4K/1080p/720p video files in various formats.  It offers a range of impressive features, but its most noteworthy aspect is its utilization of cutting-edge disc decrypting technology which enables the software to decypt and rip blu-ray discs that are protected with various encryption mechanisms such as AACS, BD+, MKB and CSS-DVD.

Let’s see how we can do it.

Step 1 Download and Install Leawo Prof. Media

Step 2 Launch the program, Go to Convert module, insert your Blu-ray into the drive slot and add it into the program by clicking Add Blu-ray/DVD > Add from CD-ROM button.

Add Blu-ray Disc to Program Blu-ray Ripper

Step 3 Select a title that you need, for majority, Main Title is the full video that people need.

Select a Title from Blu-ray Disc for Ripping

Step 4 Config the output video settings that fit you. Click the drop-down menu named MP4 Video, Then click Edit in the drop-down box you can change the video codec, resolution, bit rate, frame rate and settings about the audio. Click Change in the drop-down box, you can change video format to MKV, MOV, AVI, and many others.

Custom Output Video Settings

Step 5 Verify your output settings and click Convert to start the ripping Blu-ray disc.

Enjoy your Blu-ray Video anywhere you want.