[Mozilla Enterprise] Firefox ESR Upgrade Deletes Enterprise Policies

[Mike Kaply]

That's the default behavior, but you can prevent it using a command line
parameter.

See:

https://firefox-source-docs.mozilla.org/browser/installer/windows/installer/FullConfig.html

/RemoveDistributionDir=false

Mike

On Thu, Aug 27, 2020 at 11:33 AM Eddie Rowe <eddie.rowe at tdhca.state.tx.us>
wrote:

> I discovered today that Firefox ESR 68.12 and Firefox 78.2 may have logic
> built into the .EXE installer to delete folders on systems containing our
> enterprise policies.  After applying the upgrade to a system I noticed the
> Enterprise policies were inactive.  Dropping to the file system I noticed
> the C:\Program files\Mozilla Firefox\Distribution\ folder was missing.
> We use a third party tool to patch and I think it has its own issues with
> this release so all testing was done manually applying the .EXE upgrade.
>
>
>
> *Setup:*
>
> ·       Windows 10 x64
>
> ·       Firefox ESR (we moved to 78 to I saw this with 78.2 and I tested
> 68.12 and duplicated the behavior)
>
> ·       Policies.json file used
>
> ·       Windows Group Policy Preference refreshes our Policies.json file
>
>
>
> *Steps to Reproduce:*
>
> 1.     Install/setup Firefox ESR 68.11 or 78.1 and verify policies.json
> file is in the proper folder and enterprise policies are applied ala
> about:policies
>
> 2.     Launch the upgrade (.EXE installer) and as soon as the dialog
> appears “Doing a Little Housekeeping” you will notice the C:\Program
> files\Mozilla Firefox\Distribution\ disappears
>
> 3.     Group Policy will eventually replace the files, but if the browser
> is closed and launched when the files are missing, all the hard work to
> harden Firefox goes by the wayside.
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