Normally this error only occurs in Microsoft Exchange Server versions
5.5 and below. If your getting this error message and you are not trying
to install a new Exchange server, then most likely you are going to
need exchange server data recovery.
This error is seen as a Microsoft
NT(2000) event error code, as well as an Exchange Server Error when
trying to start the information store. This error occurs when the Exchange
Server database is corrupted.