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UPN issue.

nav2567
nav2567 asked
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Last Modified: 2016-08-31
In effort to migrate our Exchange 2010 users to O365, we have discovered we have a lot of users with duplicated UPNs.  

For ex, in the attached, the user login using adlopez but her User Logon Name in AD is "alopez".  There is also another users with that User Logon Name.  

2 questions:

1. Can I just rename and enter adlopez in the User Logon Name field without causing any issue?
2. Is User Logon Name is the same as UPN?

Thanks.
adlopez.png
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Adam BrownCloud Security Consultant
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Top Expert 2010
Commented:
This problem has been solved!
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