Failed to Initialize Connection Subsystem

After installing KB3021952 MS15-009: Description of the security update for Internet Explorer: February 10, 2015, Cisco AnyConnect Secure Mobility Client was failing to start with following error message :
Failed to Initialize connection subsystem
In order to fix this behavior without uninstalling the KB3040335, vpnui.exe should be set to run in Windows 8 compatibility mode.
Fortunately, with latest published updates from Microsoft which includes KB3032359 Cumulative security update for Internet Explorer: March 10, 2015, will also fix this behavior (problem).


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