Firefox for Enterprise Community Forum

We use Microsoft MDT for computer deployment. We have been installing the Standard version of Firefox for a long time with no problem. Recently we started using AD GPO Templates to configure firefox. To be able to configure certain settings you need to be running the ESR version. I downloaded the more recent ESR version: 102.12.0esr.msi file.

When deploying machine MDT to install Mozilla firefox I keep getting this error: Application Mozilla Firefox ESR returned an unexpected return code: 1618

This is the only application having issues and this issue only came up since I change the installation file to the ESR version.

This is the install command being used in MDT: msiexec /i "Firefoxesr.msi" /qn /norestart

I am posting here and not with MDT support, as this only started happening when I changed the installation file to the ESR version. Has anybody else had a problem deploying ESR version through MDT? Any help on how to fix?

We are looking to mass deploy Firefox x64 for Windows to all staff in our organization, using SCCM. I know you can set a default home page in mozilla.cfg for all users, including future users who don't yet have a profile on the computer Firefox is installed on. Is there a similar option so I can configure Firefox to always show the menu bar for all users? Preferably, another line I can add to mozilla.cfg so that I can easily copy that to all our machines? Thanks.