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GiantAtx-0268 avatar image
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GiantAtx-0268 asked JeffYang-MSFT commented

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

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.

office-exchange-server-administrationoffice-outlook-itprooffice-exchange-server-connectivity
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Hi @GiantAtx-0268,
It has been a while, how is everything going?
If you have any update about this issue, please feel free to post back.
By the way, if you think the reply is helpful to you, please remember to accept it as an answer. Thanks for your understanding and support.

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AndyDavid avatar image
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AndyDavid answered JeffYang-MSFT edited

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


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Hi @GiantAtx-0268,
Agree with Andy, it is normal that Outlook will prompt for password when Exchange Server is Offline. Please check and see if above information was helpful. If you think this reply is helpful to you, please remember to mark it as an answer. Any update, please feel free to post back.

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