It looks like you have to change a configuration file, specifically iconn.cfg
. Inside this file try changing the line AllowLocalConfig = 0
to AllowLocalConfig = 1
(under [PPI.WebConfig_Primary]
section).
On macOS, it's located in:
/Library/Sophos Anti-Virus
On Windows it's in (depending on the operating system):
\Program files\Sophos\AutoUpdate\Config
\ProgramData\Sophos\AutoUpdate\Config
Source: Edit local config - Endpoint 9.5/9.7.