For a new account with an existing login, cookie requirement lacking action method
75922
Stack Overflow requires cookies for authentication -- are your browser cookies enabled for this domain?
115765
What should be stored in a cookie for a login system?
28787
Proper way to create logins on Always on
52627
Change default user for authentication
30528
Requesting an active user page
98743
localStorage a replacement for cookies?
37591
PHP login system: Remember Me (persistent cookie)
47216
Login required moving to Super User on iPad
77374
Active login not recognized on Super User
89171
Is there a browser that allows different instances that don't use the same cookie for the same site?
60949
What UX solutions are there for the EU cookie legislation?
116448
SignUp throws error in StackExchange.com for the non logged-in user
2818
How can I create an infinite login loop for a specific user?
18284
Option to add a Stack Exchange Login to Existing Account has gone AWOL
85068
How to redirect a newly registered user to a custom URL after signing up?
8022
"Requires a valid user is specified ..." error when using getCount
41394
Logins can be added/removed without reauthenticating, allowing temporary XSS to be escalated to permanent account hijacking