Siemens Industry Online Support
Siemens AG
Entry type: FAQ Entry ID: 78464533, Entry date: 08/07/2013

Why is B.Data Web not executed after component installation?

  • Entry
  • Associated product(s)

B.Data V5.3 and higher has originally installed without the "B.Data Web" component.
Later the "Internet Information Server" and "B.Data Web" components were added later through component installation.
Although the retro-installation was completed without errors, the error message "ASP.NET is not installed." is displayed when you start B.Data Web.

The cause is that the "Internet Information Server" was installed after "Microsoft .NET Framework 4".

Register the ASP.NET components manually.

  1. Start the Windows input prompt by clicking "Start > Run... > Search programs and files". Enter "cmd" in the search field and start the application with the "<Ctrl> + <Shift>" key combination pressed. Acknowledge the Windows security dialog.
  2. Change to your .NET installation directory. For example: "C:\Windows\Microsoft.NET\Framework\v4.0.30319".
  3. Execute the "aspnet_regiis.exe -i" command.

Fig. 01

Once APS.NET has been registered, you can now use B.Data Web.

Detailed information about the Microsoft ASP.NET IIS registration tool available from Microsoft at this link Link.

Further Information about B.Data
An overview of the topic of energy management with SIMATIC is available in Entry ID: 68043160.

Additional Keywords

Security information
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit
Rate entry
no rating
Requests and feedback
What do you want to do?
Note: The feedback always relates to the current entry / product. Your message will be forwarded to our technical editors working in the Online Support. In a few days, you will receive a response if your feedback requires one. If we have no further questions, you will not hear from us.