After applying the 5.5.20 patch, the User Console UI is not accessible through IE/Edge browser.
There is no error message on the User Interface, but it appears as though the user was logged in for just a second and the page refreshed back again showing the same Login prompt.
This is caused by a security enhancement in 5.5.20 to store the JSESSIONID in Cookies instead.
This change will require the browser to support Cookies.
1. Login via any browsers other than IE or Edge. Tested with Chrome and it works fine.
2. Using HTTPS protocol instead of HTTP.