Symptoms:
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.
Diagnosis:
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.
Fix:
Engineering is working on a permanent solution.
Workarounds:
1. Login via any browsers other than IE or Edge. Tested with Chrome and it works fine.
OR
2. Using HTTPS protocol instead of HTTP.