Can not sign up to "Super User" with existing Stack Exchange Account?
54930
Where is the login with Stack Exchange option gone?
137734
Why doesn't Stack Overflow require registration?
86170
Can't login to my user account
66602
Detailed instructions for replacing KingoRoot's Superuser with SuperSU
103789
Customer Community Plus User Cannot Add Other User
135722
Cannot link Stack Overflow Account to Careers Account
52132
Why can't I use Stack Exchange if I'm under 13 years old, or if I'm under 16 years old and from the EU?
6555
Account not acting as an administrator correctly
13235
How does a new user begin using Stack Overflow/Stack Exchange?
18092
How do I change the email address associated with my Stack Exchange OpenID?
54482
Why is there no option to login as root?
112616
"More Stack Exchange Communities" link broken
7783
Adding user to a group - Why had to reboot?
67852
How do I set up new users with skel
132094
Error: Account is Not Allowed To Suggest Edits
128666
"Log in to Community as User" Button Missing
23453
Cannot log onto new accounts - "The User Profile Service failed the logon. User profile cannot be loaded"