Can I re-login as the same unregistered user?
59966
How to log back into an unregistered account?
71310
User.Identity.IsAuthenticated is false after successful login
152452
How do I access my previous StackExchange myOpenId account?
122751
How do I get Askubuntu.com to recognize the fact that i'm already logged-in on Stackexchange?
3716
How do I add myself back as a sudo user?
114068
Modifying the default user registration page
41998
How can I reset all devise sessions so every user has to login again?
27749
User account doesn't appear on first login screen
133849
How can I gain ownership of a question I asked as an unregistered user?
156982
How to restore/add previous user account
32057
How to return the login screen to the default
5404
How can I log into two different accounts on two different sites now (July 2015)?
117081
How can I test the login for an expired session?
126620
Deleted MySQL "root" user (using phpMyAdmin)...how to restore?
15879
How does SO's new auto-login feature work?
42179
Logged out, but still logged in?
145864
How do I get Ubuntu to ask me for a password at login again?