The password in reference is the password to the share you are connecting to.
If it is a domain account you need domain credentials, so the username in a domain will be formatted domain\username or username@domain, you can see the proper setup from the share in it's permissions at the PC/Server
Ala
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Just make sure when you select the user they have Full control.
It is possible that the machine is on too old of a firmware for whatever PC you are scanning to, but that question can only be answered if you supply the PC setup and printer firmware level
