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Particularities with Outlook 2019/Outlook 365

Particularities with Outlook 2019/Outlook 365

Kurzinformation

Outlook 2019 and Outlook 365 have a change in the autodiscover process that leads to the Office365 account being queried first.
This leads to a problem in the connection setup with the central mail system of RWTH Aachen University.

To solve this problem, the following registry key must be set on the workstation:

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover]
"ExcludeExplicitO365Endpoint"=dword:00000001

To do this, call up the Windows app "Registry Editor":

  • Press Windows Button + R and type "regedit"

Navigate to the appropriate path

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover]

and set a new DWORD-Value (32bit) "ExcludeExplicitO365Endpoint"

Doubleclick on the DWORD-Value and change the value from 0 to 1

last changed on 03/27/2023

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