Error: Visual Studio. NET has detected that the specified web server is not running ASP. NET 1.1

Visual Studio. NET cannot determine whether ASP. NET 1.1 runs on the Web server computer. This error may occur in several different situations. Check whether the following conditions exist:

• Make sure that. NET Framework 1.1 is installed on the Web server computer. For more information, seeVisual Studio. NET software requirements.
• If ASP. net has been installed on the Web server computer but still encounters this error, it may be a configuration problem. To correct problematic installation or configuration, you can use the ASP. NET utility named aspnet_regiis. You can find this command line utility in a path similar to the following:

  C:/Windows/Microsoft. NET/framework/v1.1.NNNN/

  WhereNNNNIndicates the four-digit internal version number. Search for the maximum version number. Use the/I switch to run the utility:

  Aspnet_regiis/I

  PromptYou can open the command window directly from the correct directory of the command. From the "Start" menu in windows, point to"Program"," Visual Studio. NET 2003 "," Visual Studio. NET tool ", and then select" Visual Studio. NET command prompt ". After the window opens, TypeAspnet_regiis/I.

For information about the sequence that must be followed when installing components, see Visual Studio. NET failure to create an application <Application>. The required components are not installed.

Note: The above is Microsoft's help, which is useless to me.

My problem is that the IP address of the "default website" is changed by someone else and the problem can be solved after it is specified as "(all unallocated.