I am currently migrating mailboxes from Exchange 2010 to Exchange 2013 on prem.  I have installed PST Capture 2.0 and 64-bit Outlook 2013 on a Windows 2008 R2 machine and have installed the PST Capture 2.0 agent on a workstation that has some .pst files on it.  PST Capture finds all the .pst files on the workstation, but when I use PST Capture to try to import PST files into a mailbox on Exchange 2013, I get the error "Import error: Error opening mailbox username@mycorp.com".

I created a userID with a mailbox to run PST Capture.  Based on the instructions at https://technet.microsoft.com/en-us/library/hh781035%28v=exchg.141%29.aspx I have made that user a member of the groups that are assigned the Public Folder Management role, the Mailbox Import Export role and the Organizational Management role.  The user is also a local admin on the machine running the PST Capture console.  While the error sounds like a permissions issue, these are the only permissions I could find documented for PST Capture.  I am starting PST Capture with "Run as administrator"

Any ideas why this isn't working?  Are there any other permissions that the PST Capture user needs?  Is there anything else I need to do?

Thank you very much for your help.

• Edited by Logan Burt 19 hours 34 minutes ago

Instead of importing PST from one server and export them to upgraded one, I would suggest you to directly migrate users mailboxes from Exchange 2010 to 2013.

To accomplish this task in an easier way, you may use this automated software (http://www.exchangemigrationtool.com/) that could be an appropriate solution that provides a hassle-free environment to get this job done quickly.