<div dir="ltr"><div>Yeah, MOZ_ALLOW_DOWNGRADE is definitely what you want.</div><div><br></div><div>Mike<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jul 2, 2020 at 8:05 AM Periard, Eric <<a href="mailto:Eric.Periard@cyber.gc.ca">Eric.Periard@cyber.gc.ca</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal"><a name="m_2286066945589807580_Classify_Bookmark"><b><i><span style="font-size:12pt;font-family:"Arial",sans-serif;color:green">Classification: UNCLASSIFIED</span></i></b></a><span></span><u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I will try this out, thanks!<u></u><u></u></p>
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<p class="MsoNormal">I have since upgraded to the latest ESR, but just in case….<u></u><u></u></p>
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<p class="MsoNormal">Eric<u></u><u></u></p>
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<p class="MsoNormal"><b>From:</b> Mike Kaply <<a href="mailto:mkaply@mozilla.com" target="_blank">mkaply@mozilla.com</a>> <br>
<b>Sent:</b> July 1, 2020 2:47 PM<br>
<b>To:</b> Periard, Eric <<a href="mailto:Eric.Periard@cyber.gc.ca" target="_blank">Eric.Periard@cyber.gc.ca</a>><br>
<b>Cc:</b> <a href="mailto:enterprise@mozilla.org" target="_blank">enterprise@mozilla.org</a><br>
<b>Subject:</b> Re: [Mozilla Enterprise] Error with using system proxy settings (when changing from using "automatic proxy configuration URL" by default via policies.json)<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
<p><span style="color:blue">EXTERNAL EMAIL – USE CAUTION / COURRIEL EXTERNE – FAITES PREUVE DE PRUDENCE</span><u></u><u></u></p>
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<p class="MsoNormal">You can read more about this here:<u></u><u></u></p>
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<p class="MsoNormal"><a href="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" target="_blank">https://support.mozilla.org/en-US/kb/understanding-depth-profile-installation</a><u></u><u></u></p>
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<p class="MsoNormal">But specifically at the end:<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">" 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."<u></u><u></u></p>
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<p class="MsoNormal">Hopefully this should accomplish what you need.<u></u><u></u></p>
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<p class="MsoNormal">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 -
<a href="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" target="_blank">
https://github.com/mozilla/policy-templates/blob/master/README.md#legacyprofiles</a><u></u><u></u></p>
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<p class="MsoNormal">Mike<u></u><u></u></p>
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<p class="MsoNormal">On Wed, Jul 1, 2020 at 12:04 PM Periard, Eric <<a href="mailto:Eric.Periard@cyber.gc.ca" target="_blank">Eric.Periard@cyber.gc.ca</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal"><b><i><span style="font-size:12pt;font-family:"Arial",sans-serif;color:green">Classification: UNCLASSIFIED</span></i></b><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Hello,<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">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….<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">Usually I keep a baseline version of the package via the Software Center and the users can update the browser via the ABOUT menu.
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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.<br>
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so far the only solution I got is to go ahead and update the baseline version of my Firefox package.<br>
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So here’s my questions:<br>
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1. Is it possible somehow to load a new profile onto an old Firefox?<br>
2. Is it possible to force Firefox to look for updates as soon as someone tries to open it?<br>
3. If 2. is possible, would it fetch the update before prompting the user to create a new profile?<br>
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Please advise, this seems to be a none-issue with Chrome post-user mig.<br>
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Thanks<br>
<br>
Eric<br>
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<u></u><u></u></p>
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