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In Windows 10 20h2 version the config setting for firefox is not working

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In Windows 10 20h2 version the config setting for firefox is not working while in Windows 7 and lower versions of Windows 10 it is working fine. The settings in js file and cfg file is correct but still it is not working in Windows 10 20h2 version. It is observed that everytime the firefox is launched it is generating new ffm.js and ffm.cfg file. If we try to edit this ffm.js file still it is not taking the updated values. it again regenerated the file. Can you please help in resolving this issue?

In Windows 10 20h2 version the config setting for firefox is not working while in Windows 7 and lower versions of Windows 10 it is working fine. The settings in js file and cfg file is correct but still it is not working in Windows 10 20h2 version. It is observed that everytime the firefox is launched it is generating new ffm.js and ffm.cfg file. If we try to edit this ffm.js file still it is not taking the updated values. it again regenerated the file. Can you please help in resolving this issue?

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Following config setting is being applied in .cfg file // lockPref("security.enterprise_roots.enabled", true);

This setting is working fine in Windows 7 and lower version of Windows 10; only in 20h2 version of Windows 10 it is having issue. It is not taking the value of this cfg file instead each time the firefox is launched it is regenerating ffm.cfg and ffm.js files.

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Can some please suggest some solution for resolving this firefox issue in Windows 10 20h2 version?

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Firefox doesn't generate JS and CFG files, those are files you create and put in Firefox yourself, so something else is regenerating those files.

I have a blog post that details how to debug autoconfig:

https://mike.kaply.com/2016/09/08/debugging-firefox-autoconfig-problems/

I would suggest you stop using Autoconfig and use our policy support.

https://github.com/mozilla/policy-templates

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Note that you need to disable the sandbox in case you use privileged JavaScript code in autoconfig.cfg

  • defaults\pref\autoconfig.js => pref("general.config.sandbox_enabled", false);
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I just need the config option "security.enterprise_roots.enabled" to be true...so can you please guide me where is this option in that template as I am unable to find it.

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Seçilmiş Həll

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Thanks Mike ...the solution that you provided worked.