With the Intune service release 2208 there is a really nice feature that provides the support to import ADMX and ADML templates very easy into MEM. This helps to create configurations for e.g. 3rd party products. How this work I will explain based on a Firefox.

Upload ADMX and ADML
As prerequisite it is required that Firefox is installed on the device.
- Open the MEM Portal
- Navigate to Devices -> Configuration Profiles
- Select Import ADMX
- Click + Import

- Download the latest Policy template from the mozilla git hub repository

- Unzip the archive
- In the windows folder you can find the .admx file and in the en-US the .adml file
Note: Since the feature is in the public preview, only en-us ADML files are supported.


- Upload first the mozilla files and then the firefox files
- Click Next


- Wait until the upload is completed

Create Configuration Profile
- Navigate to Devices -> Configuration Profiles
- Click +Create profile

- Select Windows 10 and later
- Select Template -> Import Administrative template (Preview)
- Click Create

- Enter a Name
- Click Next

- Navigate to Mozilla -> Firefox -> Bookmarks
- Select Bookmark 01
Hint: Here you can of course configure everything you need

- Select Enabled
- Insert you URL and Name for the bookmark
- Click OK

- Click Next -> Next

- Assign the profile to a group
- Click Next
- Click Create

Validate
- Check the status in Intune

- If everything works you can find the configuration and the status in the registry
