Forum Discussion
We have a hybrid setup with on prem exchange server and O365 exchange integration.
I recently converted a former employees mailbox to a shared mailbox and added delegation rights to their manager. I waited about a week before removing the microsoft license and moving the account t...
You moved the account to an OU that isn't synced with Azure AD. Since you're in a hybrid setup, that caused the account (and shared mailbox) to be removed from Microsoft 365 during the next sync. Shared mailboxes don’t need a license, but the account must stay in a synced OU to exist in the cloud.