Issue
Schneider Electric domain firewall policy
Product Line
Satchwell BAS & Sigma
Environment
Engineer's laptops
Cause
Schneider computer/domain updates include McAfee firewall updates.
It has been seen on some laptops with a fully working Sigma system, after a Schneider policy update, the Sigma client fails to connect to the server.
Resolution
Access to the firewall setting, on most Schneider Electric engineer's laptops is not possible.
Disabling the McAfee firewall should allow Sigma to load.
Locate and, with a right mouse click, select the McAfee Icon 
From the list provided select "Quick Settings"
Then select "Enable Firewall Timed Groups",
You will need to enter a reason.
The firewall will be disabled for a one hour period.
