Forum Discussion
Upgrading to Exchange 2019 from 2010 through 2013 and 2016
Hi All, We have been facing issues with our exchange server deployment, it is based in an entirely online mode other than assigning remote mailboxes to users. To continue assigning mailboxes we were...
Hi Tae,
Thank you for the help, the error i get is when installing the 2013 management tools, as such i cant enter commands in unless they're for the 2010 management tools,
Thank you
Thank you for the help, the error i get is when installing the 2013 management tools, as such i cant enter commands in unless they're for the 2010 management tools,
Thank you
Identify the specific UPN value that is causing the conflict.
Check the existing user accounts in your Active Directory forest to see if any other user already has that UPN value.
If you find a duplicate UPN, you will need to modify one of the accounts to have a different UPN that is unique.
- Hi Tae,
I will try and go through the users today and see if there are any duplicates,
Thank you