Question : 2010 Cannot create new mailbox

Hello, I've had nothing but trouble with this one mailbox. I have transitioned to 2010 from 2003. Two mailboxes were "stuck" and I could not remove the move-request. So I have backed up their mailbox to a PST file, deleted their 2003 mailbox (keep for 0 days after deletion). One of the users I have created a 2010 mailbox successfully but the other gives me the error below.


Summary: 1 item(s). 0 succeeded, 1 failed.
Elapsed time: 00:00:00


user
Failed

Error:
Active Directory operation failed on SERV1.domain.local. This error is not retriable. Additional information: Insufficient access rights to perform the operation.
Active directory response: 00002098: SecErr: DSID-03150E8A, problem 4003 (INSUFF_ACCESS_RIGHTS), data 0


The user has insufficient access rights.

Exchange Management Shell command attempted:
Enable-Mailbox -Identity 'domain.local/domain/user' -Alias 'user'

Elapsed Time: 00:00:00

Answer : 2010 Cannot create new mailbox

>>  after restarting gets an error  System.ArgumentNullException' occurred in mscorlib.dll

This is because your file is blank and ReadLine() returns nothing, so null is being passed to Long.Parse(). You should consider checking the return of ReadLine() for null before passing to Long.Parse--even if you get the logic working correctly.

>>  it all works except when it tries to write to the file nothing gets written

What kind of app is this? A windows service?

>>  what os are you using

XP