Office 365 Autodiscover not working

Siraj Hydrose 5 Reputation points

After a Tenant to Tenant Migration Autodiscover is not working. Migrated from a Tenant with Azure Ad Connect synced to the new tenant using BitTitan. Autodiscover is publish via DNS Registrar and updated, but outlook is not connecting.


Attempting to send an Autodiscover POST request to potential Autodiscover URLs.

Autodiscover settings weren't obtained when the Autodiscover POST request was sent.
Test Steps

The Microsoft Connectivity Analyzer is attempting to retrieve an XML Autodiscover response from URL for user .The Microsoft Connectivity Analyzer failed to obtain an Autodiscover XML response.
Additional DetailsAn error message was returned from the Autodiscover service XML response: <?xml version="1.0"?> <Autodiscover xmlns:xsd="" xmlns:xsi="" xmlns=""> <Response> <Error Time="20:34:28.4861487" Id="3560106202"> <ErrorCode>500</ErrorCode> <Message>The email address can't be found.</Message> <DebugData />

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