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<p class="MsoNormal"><span style="font-size:12.0pt">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
</span>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.<span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt">Setup:<o:p></o:p></span></b></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:12.0pt;font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt">Windows 10 x64<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:12.0pt;font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt">Firefox ESR (we moved to 78 to I saw this with 78.2 and I tested 68.12 and duplicated the behavior)<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:12.0pt;font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt">Policies.json file used<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:12.0pt;font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt">Windows Group Policy Preference refreshes our Policies.json file<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt">Steps to Reproduce:<o:p></o:p></span></b></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-size:12.0pt"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt">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<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-size:12.0pt"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="font-size:12.0pt">Launch the upgrade (.EXE installer) and as soon as the dialog appears “Doing a Little Housekeeping” you will notice the
</span>C:\Program files\Mozilla Firefox\Distribution\ disappears<span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l1 level1 lfo2"><![if !supportLists]><span style="font-size:12.0pt"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>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.
<span style="font-size:12.0pt"><o:p></o:p></span></p>
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