Outlook verbindet auf O365 anstatt Hosted Exchange
Outlook bypasses AutoDiscover and connects directly to Office 365 mailbox Starting in Outlook 2016 version 16.0.6741.2017, Microsoft has enabled a new feature called Direct Connect to Office 365. What this feature does is connect Outlook directly to Office 365 if Autodiscover is not working. This is great feature but a network hiccup may cause your mailbox to connect to Office 365 rather than your on premise Exchange, even with a valid autodiscover record.
For Direct Connect to take effect the user must have an active mailbox on Office 365 with a valid license. Typically Direct Connect would be a neat feature unles you are in the middle of a migration to 365, but a network hiccup could incorrectly connect you to 365 even though you havent completed your migration yet.
During 365 migrations deom Hosted Exchange or On-Premise, we recommend disabling this option from the user computer registry:
You can stop Outlook from checking Office 365 for settings by setting a registry key.
For Direct Connect to take effect the user must have an active mailbox on Office 365 with a valid license. Typically Direct Connect would be a neat feature unles you are in the middle of a migration to 365, but a network hiccup could incorrectly connect you to 365 even though you havent completed your migration yet.
During 365 migrations deom Hosted Exchange or On-Premise, we recommend disabling this option from the user computer registry:
You can stop Outlook from checking Office 365 for settings by setting a registry key.
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscoverDWORD: ExcludeExplicitO365Endpoint Value = 1
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