Some users have repeatedly reported This Blu-ray Disc needs a library for AACS decoding, and your system does not have it error when trying to play a Blu-ray disc without the Blu-ray player software.

Download DLL files from reputable sources, such as those listed below

  • The Blu-ray disc needs a library for AACS decoding error in VLC signals that your Blu-ray disk is protected by AACs and BD+ technologies.

  • While VLC is a well-equipped video player, the lack of libraries can hinder its efficiency and can even cause error messages.

  • Download Restoro PC Repair Tool that comes with Patented Technologies (patent available here).

  • Click Start Scan to find Windows issues that could be causing PC problems.

  • Click Repair All to fix issues affecting your computer’s security and performance

  • Restoro has been downloaded by 0 readers this month.

VLC Media Player is one of the most popular media players available on the Windows platform. And it is fully capable of playing several video formats.

This error can occur on both the older and newer version of Windows, including Windows 7, 10, and 11.

What are the possible causes for the AACS decoding error?

There are several causes for this error, but these are the most common ones:

  • Missing libraries – The error is usually caused by missing libraries. This can be easily resolved, and it’s slightly more complicated that downloading video codecs.
  • Encryption – Blu-ray discs are usually protected by encryption, but you can circumvent it using Blu-ray copy software.

What are the variations of AACS decoding errors?

Moreover, here are some error variations that you may encounter, but nonetheless, fix with the solutions below:

  • VLC AACS decoding in Windows 10, and Windows 11 – This error affects all versions of Windows, including the latest one.
  • VLC blu-ray disc is corrupted – A disc error will sometimes give you this message while trying to play it.
  • No valid processing key found in AACS config file – Missing files can cause this error to appear while trying to play Blu-ray videos.
  • Missing AACS configuration file VLC – This error is self-explanatory, and it usually appears if the necessary config file is missing.

How do I fix this Blu-ray needs a library for AACS decoding error?

1. Add libraries files to AACS

  • Visit the whoknowsmy.name website.
  • You may see a warning showing the site does not have an SSL certificate. Click on the Continue link if you want to proceed. Under Keys Database, click on the get the file link.
  • It will download the KeyDB.cfg file. Next, under the AACS Dynamic Library section, click that file hyperlink associated with your VLC Media Player version.
  • Once downloaded, copy the KeyDB.cfg file.
  • Press Windows key + R to open Run, then type %appdata%, and click OK.
  • In the Roaming folder, click the New folder icon on top, and name the folder as aacs.
  • Open the newly created aacs folder and paste the KeyDB.cfg file copied earlier.

Next, we need to move the libaacs.dll by doing the following:

  • What are the possible causes for the AACS decoding error?
  • What are the variations of AACS decoding errors?
  • How do I fix this Blu-ray needs a library for AACS decoding error?
    1. Add libraries files to AACS
    1. Remove AACS protection using Leawo Blu-ray Ripper

We have scanned the files and found them to be safe to use.

However, due to the unsigned nature of the file, the URL and the file will be flagged by the browser and then the computer. Download the file at your own risk.

  • Open the Downloads folder and copy the Windows 10 libaacs.dll file to your clipboard.
  • Press the Windows key + E to open File Explorer and navigate to the following location: C:\Program Files\VideoLAN\VLC or C:\Program Files(x86)\VideoLAN\VLC
  • Paste the copied libaacs.dll file inside the VLC folder.

Once done, check if the AACS decoding error in VLC is still showing up. After copying the required library files to the correct folder, the VLC Media Player should play the Blu-ray disc.

Some PC issues are hard to tackle, especially when it comes to corrupted repositories or missing Windows files. If you are having troubles fixing an error, your system may be partially broken. We recommend installing Restoro, a tool that will scan your machine and identify what the fault is.Click here to download and start repairing.

Expert tip:

SPONSORED

Users are also suggesting using libbdplus instead, so you might want to try that as well.

2. Remove AACS protection using Leawo Blu-ray Ripper

  • Go to the dedicated Leawo Blu-ray Ripper website, download it, and then install the software on your machine.
  • Start Leavo Prof. Media and click on Blu-ray Ripper.
  • Under the Convert tab, click on Add UHD/Blu-ray/DVD and select Add from CD-ROM.
  • Now, you need to select the output format.
  • Finally, select the output folder and hit the Convert button.

This is another method of dealing with This Blu-ray disc needs a library for AACS decoding, and your system does not have it error.

  • 5 of the best software to encode H.265 [Hevc Encoders]
  • Best video codec packs for Windows 10/11 to play all formats
  • 5+ best Blu-ray players for Windows 10/11 to enjoy your discs
  • Fix: Video could not be decoded on Windows 10/11
  • How to play DVD Video_TS folder files in Windows 10/11

Instead of tinkering with the VLC libraries, you can convert the video and remove any protection. Including AACS with a tool like Leawo Blu-ray Ripper.

After you complete the steps presented above, the Blu-ray disc protection will be successfully removed. And you will get digital video files from the source Blu-ray disc for smooth playback.

Of course, you can also avoid VLC errors by getting a better media player that will not have a problem running a protected Blu-ray.

We hope that the above solutions will help you fix this issue and now you can see your Blu-ray without any errors.

  • Blu-RayVLC Media Player

Email *

Commenting as . Not you?

Comment