Policy

Allow Internet Explorer to play media files that use alternative codecs

Windows 11 25H2

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Policy overview

Key metadata and intent for this policy.

ClassUser
CategoryWindows Components > Internet Explorer > Internet Settings > Advanced settings > Multimedia
Supported onAt least Internet Explorer 9.0

This policy setting specifies whether Internet Explorer plays media files that use alternative codecs and that require additional software. If you enable this policy setting, Internet Explorer plays these files, if the appropriate software is installed. If you disable this policy setting, Internet Explorer does not play these files. If you do not configure this policy setting, the user can change the "Enable alternative codecs in HTML5 media elements" setting on the Advanced tab in the Internet Options dialog box.

Internal name
EnableAlternativeCodec
Policy ID
8fda19aac4d6
Elements
0

Registry values

How enabled and disabled states update the registry.

Registry locationTypeEnabled valueDisabled value
HKCU\Software\Policies\Microsoft\Internet Explorer\Main\EnableAlternativeCodecREG_SZ
yes
no

Policy elements

Inputs and configuration options exposed by this policy.

This policy has no additional user input fields.

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