Set UPN Suffix using PowerShell

To Prepare for Office 365 Migration you need to add the missing ‘UPN Suffixes’.

The following example demonstrates how to create a new UPN suffix for the users in the ThatLazyAdmin forest:

Lets Start by running:

 

Then run :

 

Lets verify the new UPN in Active Directory Users and Computers

 

There you go.

#ThatLazyAdmin

 

For a full explanation of the parameters that you can pass to Set-ADForest, at the Active Directory module command prompt, type Get-Help Set-ADForest –detailed, and then press ENTER.

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