Forum Discussion
Solved
Hybrid setup and only 15 out of 2500 users are getting mailbox provisioned
We do not want users to get their mailboxed provisioned in Exchange Online. In order to enable our E5 Security licenses, we need to give users an Exchange Online licenses. We have about 2500 user...
- Ah, I figured out how to remove the online mailboxes and we are now good... for anyone that comes across this... here is an article that outlines what to do. https://techcommunity.microsoft.com/t5/exchange-team-blog/permanently-clear-previous-mailbox-info/ba-p/607619
In gist, remove the exchange online license from the user.
run the Set-User [USER] -PermanentlyClearPreviousMailboxInfo powershell command
run a delta AD Sync to make sure Azure AD picks up the Mailbox GUID
Verify 365 is showing the users mailbox is on prem in the admin.microsoft.com/#/users console
re-apply the licenses and this time, a mailbox should not be created.
Ah, I figured out how to remove the online mailboxes and we are now good... for anyone that comes across this... here is an article that outlines what to do. https://techcommunity.microsoft.com/t5/exchange-team-blog/permanently-clear-previous-mailbox-info/ba-p/607619
In gist, remove the exchange online license from the user.
run the Set-User [USER] -PermanentlyClearPreviousMailboxInfo powershell command
run a delta AD Sync to make sure Azure AD picks up the Mailbox GUID
Verify 365 is showing the users mailbox is on prem in the admin.microsoft.com/#/users console
re-apply the licenses and this time, a mailbox should not be created.
In gist, remove the exchange online license from the user.
run the Set-User [USER] -PermanentlyClearPreviousMailboxInfo powershell command
run a delta AD Sync to make sure Azure AD picks up the Mailbox GUID
Verify 365 is showing the users mailbox is on prem in the admin.microsoft.com/#/users console
re-apply the licenses and this time, a mailbox should not be created.