Mas Exchange export mailbox cmd fails since rollup 11

I have been using a script to do a mass export of mailboxes for backup purposes.  Here is the error.

The name must be unique per mailbox. There isn't a default name available for a new request owned by mailbox ''. Please clean up existing requests by using the Remove cmdlet or specify a unique

    + CategoryInfo          : InvalidArgument: (lennox-addingto...s/Administrator:MailboxOrMailUserIdParameter) [New-MailboxExportRequest], NoAvailableDefaultNamePermanentException
    + FullyQualifiedErrorId : 61E53982,Microsoft.Exchange.Management.RecipientTasks.NewMailboxExportRequest

Here is the script that I am running:
foreach ($i in (Get-Mailbox)) {New-MailboxExportRequest -Mailbox $i -FilePath "\\lennox-vm2\mailbox backups\$($i.Alias).pst"}

This has been working flawlessly for months.  I did the rollup 11 install last week, and it has been broken ever since then.  I have no idea what is happening with it.  Can anyone help me?


Dave HerringtonAsked:
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Try to Get-MailboxExportRequest to view the existing request for the user:

Use the Get-MailboxExportRequest cmdlet to view the detailed status of an ongoing export request that was initiated by using the New-MailboxExportRequest cmdlet.

After you can issue the Remove-MailboxExportRequest
Marshal HubsEmail ConsultantCommented:
Why don't you try any professional software that can export mailboxes easily without running any powershell cmdlets. These software automates the whole process and exports the mailboxes more quickly as compared to powershells and that too without causing any data loss.

You can try Stellar EDB to PST Converter, PcVita EDB converter and many more are there. Even I use professional tools to carry out such complex tasks and get the job done quickly and easily with a few clicks.
Dave HerringtonAuthor Commented:
Ok, so the problem ended up being that the MailboxRequest, even though completed, somehow held the mailboxes in a state that any new export could not be done.  I am going to add the remove-mailboxrequest cmd to my script for future use.

Thank you, suriyaehnop, for this, as it led me in the right direction!

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MASEE Solution Guide - Technical Dept HeadCommented:
Dave HerringtonAuthor Commented:
I solved the problem and wanted to share my findings.
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