Note: Symantec supports browsers unaffected by NPAPI plugin removal that can access the Management Console directly.
NPAPI plugin support was disabled by default in version 42.Refer to following for the status of the NPAPI plugin support amongst browser versions:
Some browsers, such as Google Chrome and Mozilla Firefox, have removed support for the NPAPI plugin.
NPAPI plugin support is required when a browser accesses the ProxySG Management Console or the Proxy tab in the ASG Management Console directly.