You run the New-MailboxImportRequest cmdlet to import a .pst file into a mailbox in a Microsoft Exchange Server 2010 environment. In this situation, the Microsoft Exchange Mailbox Replication Service service crashes. Additionally, the following event is logged in the Application log:
This issue occurs because the value of a variable is set to Null. However, there is no check for null variables before the Microsoft Exchange Mailbox Replication Service service accesses the variable.
To resolve this issue, install the following update rollup:
2529939 Description of Update Rollup 3 for Exchange Server 2010 Service Pack 1
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the New-MailboxImportRequest cmdlet, visit the following Microsoft website: