there is a method to single user reset the password if required

there is a KB 000464450 looks like only EMC and partner access though

should be compatible with all DD

Do you have access to any DD users?

Do you have any other admin user available in the same Data Domain to login? if the answer is yes then raise a support case to Dell EMC, A TSE would be able to assist you to reset the password.

Although there is a documented procedure available for resetting the password cannot open that for public, as it is a restricted procedure for EMC internal and partners.

Thanks

Deb

unfortunately no. there is just sysadmin user active on DD160.