• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1650
  • Last Modified:

How to change the UPN set by default to new users in Windows 2012 R2

Hi Experts

1. I created a new DC
2. I decided to name it company.local
3. I now realise that I should have called it company.com to get it ready for future Azure integration

4. I added company.com as an Alternative UPN suffix in Active Directory Domains & Trusts
5. I now want to make sure that all new users created in the AD get the new UPN by default (without having to manually change it when adding the new object)

How can this be done?
* I went to Active Directory Users & Computers, right-click an OU, and in Attribute Editor, changed the value of uPNSuffixes to company.com. That does not seem to set this as a default value.

Alexandre Michel
Alexandre Michel
1 Solution
yo_beeDirector of Information TechnologyCommented:
I do not think you are wrong for naming it .local. This is only for internal use and helps you segment the public from the private. Adding the UPN Suffix is the proper way of dealing with this in my opinion.

I had to do the same thing when I introduced O365 to the mix and it works fine.

The link posted for buck changing the UPN using powershell is the easiest way to accomplish this. It will also get you thinking of using scripts to do other mass changes or management in your AD.

Good luck
Alexandre MichelManager; IT ConsultantAuthor Commented:
@Pune Tech. Thanks for that. I found this powershell script too and used it. What it does is changing the UPN for EXISTING objects in the AD (though at the end I had to use a slightly different one of the -SearchBase switch wasn't accepted).

Anyway, the question I was asking is about setting the default UPN of NEW object, so that when a user is created, it is automaticallt assigned the new company.com UPN rather than the company.local UPN which then has to be manually changed (easy enough to do, I just want to make is seamless).

Any suggestions?
Has Powershell sent you back into the Stone Age?

If managing Active Directory using Windows Powershell® is making you feel like you stepped back in time, you are not alone.  For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why.

yo_beeDirector of Information TechnologyCommented:
I will only speculate, but that would be a domain name change if you want to do that.
Kevin StanushApplication DeveloperCommented:
If you are using ADUC to create the user accounts, there isn't any method to change the default. ADUC will always default to the domain you are running it under to manage.  

There is another EE question for this here:


The solution to this question though, while it looked promising, did not work for me.  Essentially, you were to put in another UpnSuffix value at the OU level, but all this did for me was give me another option in the dropdown, and it did not change the default.  But its worth a try, if it does not work, just clear the attribute.

The only thing you can do (if the OU level upnsuffix does not work) is to make sure anyone that is creating user accounts knows how to set the alternate upn suffix you want, or create the users from a custom application/script that you can make do whatever you want.
yo_beeDirector of Information TechnologyCommented:
Here is a reason to use scripting to create users and you can template the scripts to automate group membership.
With scripting, you can control the UPN being used.
Alexandre MichelManager; IT ConsultantAuthor Commented:
Thanks everyone for commenting. Most answers were confirming that it is not possible to automatically set the domain using the GUI . Sigh.
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now