Unable to register Qlik.com due to “The email you entered already has a Qlik Account. Please login error

[Sonja_Bauernfeind]

Registering for a Qlik Account fails with:

The email you entered already has a Qlik Account. Please login.

No account was previously created with this email address. 

1. Cookies and Browser Cache can interfere. Clear out cache and cookies. See How to Clear Browser Cache for specific site)

2. For further assistance, contact Qlik Support: How to create a case and contact Qlik Support.