Forum Discussion
Exchange Online - Autodiscover XML response not returning Outlook settings
Hi everyone, We are currently involved in a support case for one of our users that is unable to access her e-mail account when using Outlook desktop version, webmail is working as expected. The m...
Is there a User account in on-premises AD for this user and is it configured correctly? You should be able to see the user in the on-premises Exchange Admin as an Office365 user. If not that indicates the on-prem account is not configured correctly and thus not redirecting the Autodiscover to EXO
Dan_Snape Yes, we do have an onprem user object and remote mailbox, which are configured correctly. When using M365 Enterprise Apps, Outlook should also automatically first try the M365 autodiscover service before attempting to resolve DNS. I think this is hardcoded in the application.
Just to be sure i tested the OnPrem Autodiscover for the user, and it returns:
<RedirectAddr>username @ tenant.mail.onmicrosoft.com</RedirectAddr>- Have you confirmed everything is ok with the mailbox by using OWA? Outlook has registry settings that control whether it points to EXO or uses DNS (plus some other options) so it's worth checking them as well. Testing Outlook autoconfiguration will also show you where it's going wrong
