I hope someone can help. I have seen similar questions about this issue but am yet to find something that works for me. Although I know my way round AD pretty well, I am fairly novice when it comes to scripting. The new UPN suffix I want to apply is already in AD and I can easily manually change it for individual users but need a method to change it for all users. I want to (naturally) run this against a test OU first to ensure it works as expected. The distinguished name of the OU is "OU=users,OU=test,DC=Emea,DC=domain,DC=net".
As I say, as I am a novice when it comes to scripting, a complete description of how to do this would be ideal.