Firefox SNAP unable to authenticate via NTLM to IIS

Bug #2064957 reported by Giovanni Panozzo
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
firefox (Ubuntu)
New
Undecided
Unassigned

Bug Description

I have an intranet site developed with IIS, where only "Windows Authentication" is enabled.
(http header WWW-Authenticate: has "NTLM" at its beginning)

Firefox (snap version) on Ubuntu 24.04 is unable to authenticate to that site. I removed the snap version of firefox, installed the mozillateam/ppa version and the authentication works perfectly.

Firefox for MacOS, Firefox for windows are able to authenticate to the site without problems.
Chrome on Ubuntu is working too.
Only the snap version seems to be affected.

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