Is there any script command or any other method to transfer username’s from sAMAccountName to user-principal-Name(upn) ?.

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Hi All,



Please if anyone can suggest me how can I move the Username from sAMAccountName field to user-Principal-Name field in active directory.



I have created more than 1000 of user in active directory and used sAMAccountName field for Username but due to sAMAccountName length 20 characters restriction.

I want to use user-Principal-Name(upn) as Username.

Is there any script command or any other method to transfer username’s from sAMAccountName to user-principal-Name(upn) ?.


Thanks in Advance.