The user name entered in the SourceUsername field must be qualified with a domain or computer name. In the unattended setup ...

The user name entered in the SourceUsername field must be qualified with a domain or computer name. In the unattended setup file, qualify the user name with a domain or computer name.  Example: COMPUTER1\UserName Example: DOMAIN\UserName Example: [email protected]  After you have updated the unattended setup file, run Setup again.