In some cases you’ll see the following status on a user’s mailbox archive:
This message indicates that the Exchange archive attributes are configured in your on-premises Active Directory, but the configuration has not yet been replicated to Exchange Online.
Synchronize Azure AD Connect and wait for a few minutes. Close and re-open user properties to refresh the status.
After a while the archive status changes to Deprovisioned:
If the archive status seems stuck with the status “Provisioned (pending)” please review the following article.