Policy

Allow Internet Explorer to play media files that use alternative codecs

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.

Policy
Pack Microsoft Windows
Category Windows Components / Internet Explorer / Internet Settings / Advanced settings / Multimedia
Policy ID 90a701a3f157
Internal name EnableAlternativeCodec

Registry

Copy registry mappings

HKLM\Software\Policies\Microsoft\Internet Explorer\Main\EnableAlternativeCodec (enabled) = yes
HKLM\Software\Policies\Microsoft\Internet Explorer\Main\EnableAlternativeCodec (disabled) = no
HKCU\Software\Policies\Microsoft\Internet Explorer\Main\EnableAlternativeCodec (enabled) = yes
HKCU\Software\Policies\Microsoft\Internet Explorer\Main\EnableAlternativeCodec (disabled) = no

Policy notes

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.

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