[Mozilla Enterprise] Differences Between ESR 68.8 and Rapid Release 76.0.1 that might break a web site?

[Mike Kaply]

On Fri, May 15, 2020 at 6:55 PM Eddie Rowe <eddie.rowe at tdhca.state.tx.us>
wrote:

> I am unable to use Firefox ESR with an antivirus product portal, but the
> web site works fine with the Rapid Release version.  Are there differences
> between the products that I am missing?  The symptom I see that that I can
> logon the portal, but if I try to use functionality on the site I see that
> I get a 403 error when reviewing the Developer console (Network).  So I can
> navigate and use most of the portal, but if I wanted to use any of the
> functions that require checking a checkbox and clicking on a button to
> perform some action, it gives a generic error message outside of the
> Developer console (Network).
>
>
>
> I removed all of our policies and preferences for ESR.  I verified that
> the privacy settings are not blocking anything by selecting Custom and
> unchecking everything.  I even installed ESR on my home PC in a similar
> fashion and duplicated the issue with similar results.  As usual our friend
> Chrome works… Support is less than helpful from the antivirus vendor.  My
> position has been that if the web site gives me a 403, the web site is
> responsible for the problem.
>
>
>
> Method Not Allowed
>
>
>
> The method is not allowed for the requested URL.
>

That's really odd.

Can you try aa user agent switcher

https://addons.mozilla.org/en-US/firefox/addon/user-agent-string-switcher/

That would tell you if the problem was that the website was because they
were explicitly checking the version.

I agree a 403 usually indicates a website problem.

If you let us know the site, I can have the webcompat team take a look.

Mike



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