SYMPTOM:
Error "The Web Server encountered an unknown runtime error" is yielded in Strategy Web. The user cannot access Strategy Web hosted on Microsoft IIS web server. The error is shown as below:

The Web Server encountered an unknown runtime error. An error has occurred on this page.
System.Web.HttpCompileException: C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\MicroStrategy\52a35344\a66a30d1\App_Web_empty.ascx.c4da9bd.ao6konze.0.vb(40): error BC30456