As a long time user of the site, and someone who figured out the site in a kinder, gentler less confusing age, it feels like this is a aggregation of a few problems
SE is frictionless for new users. You don't really need a login, until your cookies get messed up (or eaten) or you switch PCs. You don't need a logon but it helps ensure your questions are all ...
This isn't a problem with SE, it's a problem with you remembering your login info. There are a few things you could try
Use a password manager like LastPass to remember it for you
Use a Google or Facebook account that you are almost always logged into so that you automatically get logged into SE
Write it down somewhere.
Assuming you can log in from home, you can just add another OpenID provider. Follow the instructions in this post:
I forgot my Super User email, how do I recover my account?
See also: How do I change my OpenID provider(s)?
Once you associate an email with your Stack Exchange OpenID, you can't change it, this is status-bydesign. Says Kevin Montrose:
If you've lost access to the e-mail you registered with initially, create a new openid.stackexchange account and either add it to your Stack Overflow account (via your profile page, if you're still logged in) or create a new ...
Are you using HTTPS Everywhere? If so, temporarily disable it for Stack Exchange sites — it seems to be breaking the login page. I encountered this same error earlier today.
See "Can't login with Stack Exchange OpenID when HTTPS-Everywhere plugin is active - apparent protocol mismatch" on Meta Stack Overflow
I don't want to give out my social media credentials!
By the way, that's not what happens here. StackExchange uses OpenID, which means you get redirected to the actual login page for the provider you select. You log into them directly (SE can never see the username/password), and then the provider passes a token back to identify you. SE uses the email ...
The "sign up page" that you show is accessed by clicking, naturally,
on "sign up":
"Sign up" means "create a brand new account".
If you already have a Stack Exchange (OpenID) account,
you don't want to do that; you just want to "log in":
I believe Google's OpenID provider is considered to be under the auspices of Google+ in terms of branding, which, indeed, is technically separate from having a Google+ account.
All you actually need is to have a Google Account, which means you have an email address (which may not even be Gmail-backed) that's associated with a username and password that you ...
This is expected behavior and not a bug.
Pressing the back button a few times after logging in gets your browser in an incorrect state, in which you just load the page where you were logged out. But actually, you are logged in. So, if you try to login again you get an error because you are already logged in, that makes sense and is not a bug.
What you ...
had two separate Stack Exchange accounts. One was work related, the other was for personal use. For some reason, StackExchange merged those two accounts as one
No. This happens only if you've logged in as the first user & add then added the second account's email address to the first account's login credentials.
Both my wife and I have our own ...
It should be possible to bypass your restrictive proxy, but I can't tell you to do that, nor can I ...
After getting few inputs in comments about cookies and extensions; i checked my settings. Settings for cookies were correct. Then I disabled all extensions installed and tried enabling them one at a time. It turned out that one of the extensions was causing this issue. Few months back, I installed redmorph extension to block tracking scripts and cookies. In ...
As those cookies are coming ...
This site (and Stack Exchange in general), provide a few ways for users to log in based on the technology/concept of OpenID. The idea being that you don't need to remember yet another account for logging in. Instead, you can use one (or more!) of your preexisting logons for other services to act as your account here.
If you wish to check which logins you ...
Yes you can - though its been a while since I tested it. Taken from my MSE answer
It sort of works, though it is a little more convoluted that it could be.
You'd need to start by creating an account at the Stack Exchange OpenID page.
Login, check your profile page, and click on the link "Use your own URL to log in".
It'll give you a bit of HTML code
This discussion has been bothering me for several days now and I think I finally figured out why. In the model for the community our first point is to Be Nice. We as a community failed at that. I failed at that. We had a member of our community who was struggling with an aspect of this site and we kicked him while he was down. And then we kicked him ...
I have a similar problem while at work. I am not going to the effort to provide a screenshot of what the secure page looks like. I will describe what it looks like, the page does not fully load, which basically means required content is being blocked by the network. What content is loaded, when interacted with, does nothing.
I found if I copied the ...
It could be an issue of that particular brower/version/OS combination you were using. Is anyone else able to reproduce this bug locally?
As a troubleshooting step can you verify that the issue still happens if you make sure you select "Everything" as "Time range to clear"?
You can log in with any of the following accounts, and as long as the associated email address is the same, you will be logged in to your account:
For those login providers, we only record your email address, and as long as the provider returns the same address, in you go. Once you're logged in, you can change or ...