troubleshooting Question

Exchange 2010 and O365 migration

Avatar of Trish Glees
Trish GleesFlag for United States of America asked on
3 Comments1 Solution274 ViewsLast Modified:
Migrated from Exchange 2010 to O365 Exchange P1 this past March 2014.
Prior to the migration we created .pst files some folders were so large we  had to break them into chucks.
Clients also used archives.
Turned off the Exchange 2010 services at that time, clients are all happy.
Today a client is stating that 2 years of his email is missing, the folders are there but the emails.
So I pull the tape (external drive) with all of the .pst files. I find this clients he email was broken down into 5 .pst files; four of the file work perfectly the 5 file wont open. When I try to access it whether by using the open command or import, it hangs Outlook 2013, stops Outlook 2013, looks for a solution and reboots Outlook 2013.

Note: Everytime I turn on the on premise Exchange 2010 server, a client's Outlook and file get totally jacked up. So turning the Exchange Server on again is really not a solution.

Question 1 is there a script or a way that I can just upload this data?
Question 2 is Question 1's answer is no, does anyone have any suggestions?
Question 3 is there a way to just grab the client mailbox (without turning on Exchange 2010) and uploading it directly to the O365 Exchange P1
Question 4 just like Question 3 is there a way just to grab the client's mailbox (without turning on Exchange 2010), I do have a test Exchange in a different domain.
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