Asp.Net 程序错误Runtime Error原因与解决

死命的提示这个，不管怎么改配置文件的设置都不行

Runtime   Error    

  Description:   An   application   error   occurred   on   the   server.   The   current   custom   error   settings   for   this   application   prevent   the   details   of   the   application   error   from   being   viewed   remotely   (for   security   reasons).   It   could,   however,   be   viewed   by   browsers   running   on   the   local   server   machine.    
   
  Details:   To   enable   the   details   of   this   specific   error   message   to   be   viewable   on   remote   machines,   please   create   a   <customErrors>   tag   within   a   "web.config"   configuration   file   located   in   the   root   directory   of   the   current   web   application.   This   <customErrors>   tag   should   then   have   its   "mode"   attribute   set   to   "Off".  
   
   
  <!--   Web.Config   Configuration   File   -->  
   
  <configuration>  
          <system.web>  
                  <customErrors   mode="Off"/>  
          </system.web>  
  </configuration>  
     
   
  Notes:   The   current   error   page   you   are   seeing   can   be   replaced   by   a   custom   error   page   by   modifying   the   "defaultRedirect"   attribute   of   the   application's   <customErrors>   configuration   tag   to   point   to   a   custom   error   page   URL.  
   
   
  <!--   Web.Config   Configuration   File   -->  
   
  <configuration>  
          <system.web>  
                  <customErrors   mode="RemoteOnly"   defaultRedirect="mycustompage.htm"/>  
          </system.web>  
  </configuration>  

真实原因：.net装了以后，没有正常注册到iis

解决办法：

C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\aspnet_regiis.exe -i

C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis.exe -i