When you try to create a new Microsoft ASP.NET 1.1 application after you change the script mapping of the existing ASP.NET 1.1 Web application to ASP.NET 1.0 on a Microsoft Windows Server 2003-based computer, you may receive the following error message:
The Web server reported the following error when attempting to create or open the Web project located at the following URL: 'http://localhost/822319ev1'. 'HTTP/1.1 500 Internal Server Error'.
This issue occurs because Windows Server 2003 does not allow two versions of ASP.NET to run in the same application pool.
To work around the problem, do one of the following:
Restart the IIS before you create a new ASP.NET 1.1 application. At the command prompt, type the following command:
Create an ASP.NET application in a separate application pool. Create the script-mapped application (ASP.NET 1.0) in a separate application pool -- for example, in the ScriptMapappPool application pool. Then, create a new ASP.NET 1.1 application in an application pool other than ScriptMapappPool. For more information about how to create an application pool, visit the following Microsoft Web site: