I have a content engine 565A with ACNS 188.8.131.52, running http pxory mode. All of the windows clients setup proxy server to the content engtine. This day the windows client executed windowsupdate, but got the error message : 0x80072EFE. I have tried to setup a rule to ingore cached for the microsoft windowsupdate server, but it doesn't work. Can you help to identify this problem?