Many instances of conathst.exe when using Firefox browser 51.0.1 on Windows XP
Article ID: 164410
The Norton Security Toolbar Add-On is opening many instances of conathst.exe on Windows XP when using Firebox browser version 51.0.1 with Symantec Endpoint Protection Small Business Edition cloud (SEP SBE) installed.
Rolling back to an earlier version of Firefox (50.1.0 or earlier) or disabling the Norton Security Toolbar Add-On will resolve the issue.
To roll back to an earlier version of Firefox browser (50.1.0) choose one of the following links: