Firefox for Enterprise 129 - Release notes

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Except where noted, everything here applies to both Firefox 129 and the Firefox 128.1 ESR. Firefox 128 is the next ESR so, going forward, no enterprise changes will be backported to Firefox 115 ESR.

Table of Contents

Policies

  • The DisableFirefoxStudies policy was updated to properly disable Nimbus, Firefox's cross-platform experimentation tool.

Special Notes

There is one more planned release of Firefox 115 ESR, and then it will go out of support on October 1, 2024. Users will then be automatically upgraded to Firefox 128 ESR.

If you need to prevent upgrades for any reason, you can use the AppUpdatePin policy.

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