Basically you need to follow the steps for scenario #1 here: https://learn.microsoft.com/en-us/exchange/decommission-on-premises-exchange?redirectedfrom=MSDN#scenario-one
Go from 365 hybrid to Cloud Only
Hi,
I have a office 365 tenant with AD Sync activated which means password synchronization as well. And also some cloud only mailboxes created beside.
Right now when I need to do some changes to users or shared mailboxes I need to change attributes on the AD server.
I would like to instead of doing that go full cloud only so I can manage everything from the portal.
How do I proceed?
I have found the Powershell script to run: Set-MsolDirSyncEnabled -EnableDirSync $false to go cloud only. Is this just the way to do it or is there any more steps?
But is that it? Will the users see any affects if I do it, do I need to prepare anything for it?
Will it keep the users password it had before I run the script?
Thanks
2 answers
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AmanpreetSingh-MSFT 56,311 Reputation points
2020-04-24T13:02:06.133+00:00 @Freppys , If you have Password Hash Sync (PHS) enabled, users will directly authenticate from Azure AD and you don't need to perform any additional steps. If you are using Federated or Pass-Through authentication, you would need to first configure PHS. You can then use
Set-MsolDirSyncEnabled -EnableDirSync $false
cmdlet. After you run this cmdlet, the accounts can be managed directly in cloud.-----------------------------------------------------------------------------------------------------------
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