Is it safe to disable build-in Fraunhofer IIS MPEG Layer-3 Codec (l3codeca.acm)?

Maks Cur 196 Reputation points
2020-10-19T16:17:07.437+00:00

Hello. We faced with probem in RDP: when user log in into VM via RDP that codec causes problems with stuck programs and delay audio.

Can we just remove it from registry whith out problems or add ";" to the beginning of string in key?

path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32
key:
**msacm.l3acm REG_SZ "C:\Windows\System32\l3codeca.acm" **

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  1. Jenny Yan-MSFT 9,316 Reputation points
    2020-10-20T05:54:01.603+00:00

    Hi,

    Please understand it is hard for us to provide suggestion on specific registry key from RDS perspective. If you could like to test the deleting registry key, it is always suggested to do this on the test VM and backup important data.

    I just searched a while and found that there were different versions of the codec but all named l3codecb.acm. Not sure if it is related the compatibility of windows versions.
    33485-image.png

    References:
    http://www.phase4.org/pdfs/NR-CODEC-WIN7.pdf
    http://www.virtualdub.org/blog/pivot/entry.php?id=16

    Please note: Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.
     

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    Hope this helps and please help to accept as Answer if the response is useful.

    Thanks,
    Jenny