How Can I Assign a New UPN to All My Users?

Hey, Scripting Guy! How can I assign a new UPN to all my users?-- CH Hey, CH. The UPN (or User Principal Name) provides an alternate way of logging on to a domain. Typically you log onto a domain by pressing Ctrl-Alt-Delete, typing in your user name, domain name, and password, and then pressing ENTER. With a UPN, you don’t enter separate user an...