Anyone have any idea if I should be concerned about this message? I was checking the Eventlogs for our Exchange server and found that message. It doesn't indicate it as an error alert, but I just want to see if anyone has any input on what this message means. Event Type: Information Event Source: ESE BACKUP Event Category: General Event ID: 906 Date: 7/8/2010 Time: 9:18:56 AM User: N/A Computer: S0003MNC-MAIL Description: Information Store (3660) Server unregistered: Microsoft Exchange Server / Microsoft Information Store. For more information, click http://www.microsoft.com/contentredirect.asp.

Some version information would be helpful here, along with whether there is a backup running at the time of the error. Simon.Simon Butler, Exchange MVP. http://blog.sembee.co.uk , http://exbpa.com/

Hi, If you have no problem with backing up and restoring the mailbox store, you can just ignore these general events.