初学ASP.net,设置到IIS上之后一浏览就出现如下问题.请大家帮看看如何处理?
网页页面只放一个标签还是这个样子.

Server Error in '/' Application.
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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.]
  System.Web.Hosting.ISAPIWorkerRequestInProc.GetServerVariable(String name) +1618
  System.Web.Security.WindowsAuthenticationModule.OnEnter(Object source, EventArgs eventArgs) +593
  System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92
  System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64

 


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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42

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页面代码贴出来看看