Sophos Anti-Virus: Installation Error 3051 - an error occurred while trying to create the user account SophosSAU

Sophos Error 3051 during installation.

Run Sophos install and note user name that is expected.

Create local user account to match in Computer Management - Local Users and Groups or Control Panel.

Create the following registry keys:

DWORD: [HKEY_LOCAL_MACHINE\SOFTWARE\Sophos\AutoUpdate\Service]
"UserPreset"=0x00000001
DWORD: [HKEY_LOCAL_MACHINE\SOFTWARE\Sophos\AutoUpdate\Service] "ObfuscatedPassword"=0x00000000

String: [HKEY_LOCAL_MACHINE\SOFTWARE\Sophos\AutoUpdate\Service]
"Download User"="SophosSAUCOMPUTERNAME”

String: [HKEY_LOCAL_MACHINE\SOFTWARE\Sophos\AutoUpdate\Service]
"Download Password"="[enter Sophos Download password]"

Re-run the installer and the user account should be deleted once the installation completes.