Enable Encrypted Media Extensions

Supported on: Firefox 77 or later, Firefox 68.9 ESR or later

Registry

HKLM Software\Policies\Mozilla\Firefox\EncryptedMediaExtensions

HKCU Software\Policies\Mozilla\Firefox\EncryptedMediaExtensions

Value name: Enabled

Enabled: Enabled = 1

Disabled: Enabled = 0

Description

If this policy is disabled, encrypted media extensions (like Widevine) are not downloaded by Firefox unless the user consents to installing them. If this policy is enabled or not configured, encrypted media extensions (like Widevine) are downloaded automatically and used by Firefox.