Verifying the ASP.NET 4.0 configuration

Verify that the IIS environment contains ASP.NET 4.0:

  1. Open a command prompt as an administrator.
  2. Type the following command and press Enter:
    "%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe" -lv

    If the IIS environment contains ASP.NET 4.0, the command returns the following entry:

    4.0.30319.0 C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll

  3. If you do not see the entry, type the following command and press Enter to install ASP.NET 4.0:
    "%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe" -i