Attempts to install AppScan Enterprise results in error: Unable to register ASP.NET

Technote (troubleshooting)


Attempts to install IBM Security AppScan Enterprise on Windows 2008 machine results in error: "Unable to register ASP.NET v4.0.30128" while running the Configuration Wizard.


If you already had the .NET Framework 4 on your machine and installed IIS afterwards, the framework has not been registered in IIS, since the registrations happens when installing .NET Framework 4.

Resolving the problem

Register ASP.NET in IIS manually in following steps:

  1. Open a command prompt in Administrative mode
  2. Navigate to the .NET Framework folder by entering the following command:

    cd C:\Windows\Microsoft.NET\Framework\v4.0.30128

    NOTE: The actual version number following v.4.0 may be slightly different on your machine.
    If you are using a 64 bit version of Windows, the Framework folder is called Framework64.
  3. Type aspnet_regiis -i and press Enter.

Document information

More support for:

IBM Security AppScan Enterprise

Software version:

8.0, 8.5, 8.6

Operating system(s):


Reference #:


Modified date:


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