error when you try to reconnect a disconnected user in Exchange 2007

Summary: 1 item(s). 0 succeeded, 1 failed.
Elapsed time: 00:00:00


User name
Failed

Error:
Property ManagedFolderMailboxPolicy can't be set on this object because it requires the object to have version 0.1 (8.0.535.0) or later. The object's current version is 0.0 (6.5.6500.0).

to solve this issue run the following cmdlet:
Set-Mailbox user -applymandatoryproperties
and try again