SYMPTOM:
After installing Strategy Web Services on Windows 2008 with IIS 7 and trying to test the connection to Web Services using http://localhost/MicroStrategyWS/mstrws.asmx, the following error message comes back in the browser window:

Sample Code/Error
HTTP Error 500.24 Internal Server Error
An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode.
CAUSE:
The incorrect Application Pool is selected for the StrategyWS Web Services virtual directory.
ACTION:
Go to the StrategyWS Virtual Directory on IIS7 and right click on Properties > Advanced Settings. Change the Application Pool to "Classic .NET AppPool"
