EVSVR repair option "ArchivesDirectory" for Exchange mailboxes may not complete. Error getting Exchange Mailbox information, Error: Unspecified error (0x80004005), Step: SetSecurityDescriptor
This can be caused by mailboxes that have been deleted yet are active in the ExchangeMailboxEntry table in the EV directory database.
This issue has been addressed as part of the following release:
Enterprise Vault 9.0.3 - Release Details
EVSVR build 188.8.131.521