There is an issue with Windows 10 clients and the IWSaaS 3.0 Enforcement Agent where the following process is launched many times and more are created when browser tabs are opened:
The file pacjsworker.exe is the related executable.
HTTP Auto Proxy Detection Worker Process
The issue only happens in Windows 10 build 1809 and 1903.
The latest version of the Enforcement Agent (220.127.116.114) available for download on the IWSaaS 3.0 portal resolves this issue, so we recommend to upgrade the EA to the latest version.