How to Fix "Mailbox is locked "–Office 365 Sync Fails after Migration Manually?
While migrating Exchange mailbox from one database to a different, the Exchange Administrator doesn't get to sync the info to every folder, but Exchange
Corruptiontype Provisionedfolder Microsoft Exchange Mailbox Replication Exchange Server Program Files Microsoft Exchange Server Exchange Administrator Exchange Mailbox Replication Service
Source: techrecur.com