The form cannot be rendered. This may be due to a misconfiguration of the Microsoft SharePoint Server State Service.

You get following error when you try to access an InfoPath form in 2010:

Resolution:

1. Run Central Administration
2. Click on Configuration Wizard right hand side navigation links and then Launch the Farm Configuration Wizard.
3. Start the Wizard
4. Make sure checkbox along with State Service is checked.
5. Click Next.

This will resolve the issue and the form will start opening.