Sophos Anti-Virus for NetApp Storage Systems: setup program reports that account details are wrong

During the installation of Sophos Anti-Virus for NetApp Storage Systems, if the local security setting 'Network access: Sharing and security model for local accounts' is set to 'Guest only - local users authenticate as Guest', the setup program will report that the account details that were entered are wrong.

What to do

• Check that you have entered the correct account details.
• If the account details are correct, ignore this message and click 'Next' to continue the installation.