WebService Bug & Resolution

The following bug is encountered when running a webservice on a newly installed windows machine with new IIS [7] Bug:

[NullReferenceException: Object reference not set to an instance of an object.]
   System.Web.Security.RoleManagerModule.OnEnter(Object source, EventArgs eventArgs) +313
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +102
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Solution : Go to Control Panel > Turn on or off windows features > roles > ASP.NET > if not installed, click on the Add Role Features > select ASP.NET > Finish Installation and restart website / webservice.

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