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We have Firefox deployed and managed through Intune/Endpoint and all works well but every device has an error with this line of the policy:

UserMessaging_FirefoxLabs [./Device/Vendor/MSFT/Policy/Config/Firefox~Policy~firefox~UserMessaging/UserMessaging_FirefoxLabs] STATE Error SOURCE PROFILES Source Profile Mozilla_Firefox_Configuration ERROR CODE 0x87d1fde8

The error code is the same on all devices and is the only one present in on each device config.

Does anyone have any idea what the issue and resolution would be?

Thanks, Matt

Hello,

I am experiencing an issue with HEVC hardware decoding in Firefox on Windows 10.

System information:

OS: Windows 10 (latest updates installed) Browser: Firefox ESR 128.8 GPU: (your GPU model) GPU driver version: (your driver version) Problem: In about:support under the "Media" section, I see that HEVC (H.265) hardware decoding is not supported, while on Windows 11 with the same hardware, it works correctly.

What I have tried:

Installed HEVC Video Extensions from the official Microsoft website. Enabled hardware decoding in about:config: media.hardware-video-decoding.enabled → true media.wmf.hevc.enabled → true Updated GPU drivers to the latest version. Checked HEVC support via FFmpeg – decoders are available. Expected result: Firefox should use HEVC hardware decoding on Windows 10, just like it does on Windows 11.

Actual result: HEVC is only supported in software mode, and hardware decoding is not working.

Could you please help me resolve this issue?

Thank you!