We've been using direct web access to pass links to users via email. When the user accesses the link he/she is prompted for Pega credentials. Does anyone know how to bypass this pop-up dialog? We are using a REST service to process the incoming request. Everything works as expected except this pop-up prompt. I understand that using an External assignment should provide a one-time login embedded in the URL, but this does not seem to be working as expected. Thanks very much.