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Hello,
Exchange 2010 onprem. 0 mailboxes
M365 tenant.50 mailboxes
AAD connect server.50 user accounts synced to Azure AD.
No hybrid connectors.
I want to disable AD synchronization and have duplicate AD accounts.
Is this all what I need to do?
https://www.slashadmin.co.uk/office-365-what-happens-when-you-disable-ad-connect/
After removing sync,wait for 72h,decomission Exchange 2010 and mailboxes will work fine after that?
Thank you
@fsdg
I am writing here to confirm with you any update about this thread now.
If the suggestion below helps, please feel free to accept it as an answer to help more people.
You could follow this article to uninstall the last Exchange server and stop AAD sync: Scenario one
You could disable AAD Connector in the step 7:
Then uninstall Exchange on-premises server in the step 8.
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