Windows Server 2008. Domain upgraded from 2000. around 6000 users.
I, for some unknown reason, have a lot of users with a blank UserPrincipalName field. At least I think that is the field it is called. If you go into ADUC,to the users ACCOUNT tab, you see there user account name, but the field next to it, the dropdown for the domain name, is blank. I could go into each user and select the domain from the dropdown but that is not going to be fun. I am looking for an automated way to set this for any user who has it blank. Powershell hopefully?
FYI, the reason I need it set is that Exchange 2007 will not create a mailbox for any user who has this set. BlankPic.jpg
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