MSDP Credentials issue

Hi Guys,

i configured a new MSDP on a new Media Server, and when asking for crednetials i entered in the username and password symbols like \ * which i figured out they will not work when adding new servers to this MSDP, so i tried changing the username but i failed and i managed to change the password.

So, my question is how to change the username, cause i tried different means but couldn\t change it.

tried using tpconfig & spauser

thanks for the support