When you try to delete a shared mailbox, which is placed in Office 365 (Exchange Online), and you are running Hyrbid, you may see this:
The following error occurred during validation in agent ‘Windows LiveId Agent’: ‘Unable to perform the save operation. ‘TESTDELT’ is not within a valid server write scope.’
Then when you try to delete it from the ECP on the on-premise Exchange server:
… “isn’t a mailbox user.”
Workaround
Use powershell on the on-premise Exchange:
Remove-remotemailbox –identity testdelt@domain.com
You could also delete the user account, for the shared mailbox, and force a AAD Connect delta sync.
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Worked perfect. Thanks for the tip!
Just be aware Remove-RemoteMailbox will delete the AD account.
Hi Ian,
Are you running hybrid og just Azure AD, because in my example it’s hybrid and the on-prem AD user is not deleted.
Luckily you have the “deleted users” menu item in Azure AD 🙂
Best regards Martin