HTTP Error 500.19 - Internal server Error

If the IIS all components are not installed the 500.19 error will be generated.

(Issue: missing the aspnet_client and HTTP not installed on the IIS server)

Solution:

1. Go to the server where the IIS and TnA is deployed.
2. Go to Server Manager and right click on Manage > Add Roles and Features.
   
3. Highlight the Features.
4. Locate the NET Framework 4.5 Features and ensure that the HTTP is checked. If not checked, place a checkmark and proceed with the installation (Reboot of computer may required).