Installing : Installing System Architect XT : Verifying System Architect XT website properties in IIS : 1: Checking and configuring ASP.NET mapping
  
1: Checking and configuring ASP.NET mapping
1 Right click SAXT under Default Web sites, and go to Manage Application > Advanced Settings.
2 Verify Application Pool is listed as SAXTApplicationPool.
3 Click the browse option () next to SAXTApplicationPool, to verify the properties:
.NET Framework Version: 4.0
Pipeline Mode: Integrated
4 Click OK.
5 If the Application Pool settings are not correct, System Architect XT will not be mapped to the correct ASP.NET version.
If that is the case, click Cancel. To map System Architect XT to the correct version of ASP.NET, see Registering the .NET framework.
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2: Setting directory security manually