Instead you need to
- create a 32-bit VM (say Windows XP 32 bit)
- Join that machine to your domain
- install Outlook (32-bit) onto it
- Install IIS Common Files from Add Or Remove Windows Components
- download and install the Exchange Management Tools for 32-bit
- Login as Domain Admin
export-mailbox -identity <user> -PSTFolderPath c:\backup\<filename>.pst
This then fails with
Are you sure you want to perform this action?
Exporting mailbox content from the mailbox '<User>' into .pst file
<filename>.pst'. This operation may take a long time to complete.
[Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help
(default is "Y"):a
Export-Mailbox : Error was found for <User> because: Error occurred in the step: Moving messages. Failed to copy messages to the destination mailbox store with error:
MAPI or an unspecified service provider.
ID no: 00000000-0000-00000000, error code: -1056749164
At line:1 char:15
+ export-mailbox <<<< -identity <User> -PSTFolderPath <Path>
+ CategoryInfo : InvalidOperation: (0:Int32) [Export-Mailbox], Re
cipientTaskException
+ FullyQualifiedErrorId : 2742F138,Microsoft.Exchange.Management.Recipient
Tasks.ExportMailbox
This is because the running user does not have permission to access the mailbox.
Run
Get-Mailbox | Add-MailboxPermission -User "<YourUserName>" -AccessRights FullAccess
and repeat
export-mailbox -identity <user> -PSTFolderPath c:\backup\<filename>.pst