Firewall rules created for task scheduler engine

NIS 2012
Vista Home Premium 32 bit

Ok I noticed in recent history an entry for firewall rules created for task scheduler engine. I was on the computer at the time noted for the rule creation and I did not initiate any such activity.
I do not see any task created during that time.
I checked and the exe is in the right location and I also scanned the program and it came up clean
The PC is not new nor have any new programs recently been added.
Any ideas why this would have happened?