SBS: "Server Error in '/' Application.

[guest]

I m installed windows SBS 2008.after updating SP2 for exchange 2007,Owa is not working properly.when we browse SBS web application website in IIS following error is coming

"Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.



Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]

Microsoft.WindowsServerSolutions.CoreNetworking.CNetCommon.get_PublicFQDNPrefix() +83

Microsoft.WindowsServerSolutions.CoreNetworking.CNetCommon.get_PublicFQDN() +10

Microsoft.WindowsServerSolutions.IWorker.IIS.Modules.HttpToHttpsRedir.OnBeginRequest(Object sender, EventArgs e) +64

System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68

System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75



Please anyone help to resolve this

[guest]

Please check the event log , you also could check the IIS log to check the information when you use https://.../owa to connect the exchange server, and post some more information related with your issue.
I have run into an issue looks as same yours, check the IIS default site "asp.net impersonation", if is enabled, please disable it, and test it again.