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Outlook asking for password when network connectivity is lost with on premise Exchange 2019

GiantAtx 1 Reputation point
2020-11-13T11:49:52.433+00:00

We have Exchange 2019 deployed on premise. If for some reason Outlook (2016/2019) loses connectivity to the Exchange server (exchange server goes offline) we get a popup that asks for the users password. Can we disable that behavior somehow ?
We already have the option save credentials checked and the option always ask for credentials unchecked.

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
5,181 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,598 questions

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  1. Andy David - MVP 147.6K Reputation points MVP
    2020-11-13T12:25:20.277+00:00

    If you have one Exchange Server and it goes offline, that sounds normal. Cache mode can help a bit, but if the server is offline, Outlook will generally not do so well.
    Using a DAG cluster will mitigate most of that since the database can activate on another server if one goes down.

    Note moving to Modern Auth with Exchange 2019 should also help if that is possible:
    https://techcommunity.microsoft.com/t5/exchange-team-blog/disabling-legacy-authentication-in-exchange-server-2019/ba-p/712048

    1 person found this answer helpful.

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