[Mozilla Enterprise] Issue with IWA (Integrated Windows Authentication) and Outlook mail archive

[JUSTIAA2]

Good Morning

We have a system that uses IWA (Integrated Windows Authentication) and not PKI. When customers are using Microsoft Outlook, they are  being prompted for user credentials when accessing the email archive using Firefox Browser as their default browser. Credentials should be passed transparently for a user.  Is there an issue with IWA and Firefox? Any information will be greatly appreciated.

Justin Anderson
Software Engineer
CACI

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