Office 365 Autodiscover not working

Siraj Hydrose 5 Reputation points
2024-04-27T20:45:38.74+00:00

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.

Error:

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 https://autodiscover-s.outlook.com:443/Autodiscover/Autodiscover.xml for user user@domain.com .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="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006"> <Response> <Error Time="20:34:28.4861487" Id="3560106202"> <ErrorCode>500</ErrorCode> <Message>The email address can't be found.</Message> <DebugData />

Microsoft 365
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Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line.
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Outlook
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A family of Microsoft email and calendar products.
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