outlook 2013/2016 keeps asking for username and password

Hi,

i installed a new server 2012 R2 system. Created AD.

installed HyperV and there i installed a Exchange 2016 server.

everything seems to work but after 2 days i got the message that users cannot connect anymore.

when opening there full outlook client he keeps promting for there credentials.

when using the web owa everything works.

any idea's?

ExchangeWindows Server 2012Outlook

Last Comment

bbao

8/22/2022 - Mon

robtheplod

9/5/2016

When the users enter their credentials, are they then able to send and receive emails?

Rik Van Lier

9/5/2016

ASKER

no nothing works, he keep asking for there credentials

Peter Hutchison

9/5/2016

A few things to check.
1. Check that all the Exchange services have started and have not stopped by themselves recently, esp the address book service.
2. Check add-ons that have been added to Outlook profile which may cause additional authentication prompts. You can disable outlook add-ins in Options, Addins.
3., Check date and time on Workstations are sync'd with the date/time for the new AD domain. Must be within 5 mins of PDC's server time.

This is the best money I have ever spent. I cannot not tell you how many times these folks have saved my bacon. I learn so much from the contributors.

rwheeler23

Andy M

9/5/2016

I would also check the autodiscover settings on Exchange and test them to ensure they all work fine - seen incorrect configuration causing a crednetial prompt a number of times in the past.

ASKER CERTIFIED SOLUTION

bbao

9/5/2016

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