[Mozilla Enterprise] Error with using system proxy settings (when changing from using "automatic proxy configuration URL" by default via policies.json)

[Mike Kaply]

Yeah, MOZ_ALLOW_DOWNGRADE is definitely what you want.

Mike

On Thu, Jul 2, 2020 at 8:05 AM Periard, Eric <Eric.Periard at cyber.gc.ca>
wrote:

> *Classification: UNCLASSIFIED*
>
>
>
> I will try this out, thanks!
>
>
>
> I have since upgraded to the latest ESR, but just in case….
>
>
>
> Eric
>
>
>
> *From:* Mike Kaply <mkaply at mozilla.com>
> *Sent:* July 1, 2020 2:47 PM
> *To:* Periard, Eric <Eric.Periard at cyber.gc.ca>
> *Cc:* enterprise at mozilla.org
> *Subject:* Re: [Mozilla Enterprise] Error with using system proxy
> settings (when changing from using "automatic proxy configuration URL" by
> default via policies.json)
>
>
>
> EXTERNAL EMAIL – USE CAUTION / COURRIEL EXTERNE – FAITES PREUVE DE PRUDENCE
>
> You can read more about this here:
>
>
>
>
> https://support.mozilla.org/en-US/kb/understanding-depth-profile-installation
> <https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsupport.mozilla.org%2Fen-US%2Fkb%2Funderstanding-depth-profile-installation&data=02%7C01%7CEric.Periard%40cyber.gc.ca%7C681f359abc0d44ed5cab08d81def1fa7%7Cda9cbe40ec1e4997afb317d87574571a%7C0%7C0%7C637292260148758097&sdata=Mp%2FLGF9mhQkBFIsJskqn8llu7C7sAQyckTbHa9AOeJg%3D&reserved=0>
>
>
>
> But specifically at the end:
>
>
>
> " The downgrade blocking can be bypassed by setting the environment
> variable MOZ_ALLOW_DOWNGRADE or by passing the --allow-downgrade command
> line argument when running Firefox."
>
>
>
> Hopefully this should accomplish what you need.
>
>
>
> Alternatively if it is a problem with the new Firefox being installed in a
> different directory, you can use the MOZ_LEGACY_PROFILES environment
> variable or the LegacyProfiles policy -
> https://github.com/mozilla/policy-templates/blob/master/README.md#legacyprofiles
> <https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fmozilla%2Fpolicy-templates%2Fblob%2Fmaster%2FREADME.md%23legacyprofiles&data=02%7C01%7CEric.Periard%40cyber.gc.ca%7C681f359abc0d44ed5cab08d81def1fa7%7Cda9cbe40ec1e4997afb317d87574571a%7C0%7C0%7C637292260148758097&sdata=xNd20wghzU%2FzIpVgQOLErKTlPm9vjRSQWb6A%2Fyrzx3o%3D&reserved=0>
>
>
>
> Mike
>
>
>
> On Wed, Jul 1, 2020 at 12:04 PM Periard, Eric <Eric.Periard at cyber.gc.ca>
> wrote:
>
> *Classification: UNCLASSIFIED*
>
>
>
> Hello,
>
>
>
> Here’s an interesting situation: We’ve recently created a USMT Windows
> User Profile Backup and Restore package via SCCM and that works fine,
> however there’s a catch 22 with firefox….
>
>
>
> Usually I keep a baseline version of the package via the Software Center
> and the users can update the browser via the ABOUT menu.
>
> However if a windows profile is restored to a new system (with AppData)
> and then firefox is installed from the Software Center, of course it’s old
> and it sees the newer profile as incompatible.
>
> so far the only solution I got is to go ahead and update the baseline
> version of my Firefox package.
>
> So here’s my questions:
>
> 1. Is it possible somehow to load a new profile onto an old Firefox?
> 2. Is it possible to force Firefox to look for updates as soon as someone
> tries to open it?
> 3. If 2. is possible, would it fetch the update before prompting the user
> to create a new profile?
>
> Please advise, this seems to be a none-issue with Chrome post-user mig.
>
> Thanks
>
> Eric
>
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