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I've been able to sign up to different Stack Exchange sites by "linking" with my existing account, but I can't seem to do this for Super User.

I don't want to end up with different accounts and passwords and all the rest of it.

Can anyone help? Thanks.

(EDIT: Logging out and back in fixed it, but the answer still applies.)

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  • Related/dupe if you're on iOS meta.stackexchange.com/q/314666/398063
    – Jenayah
    Commented Aug 5, 2019 at 11:24
  • Do you remember what the last time was you logged in and visited Super user? It could be that your cookies had expired.
    – rene
    Commented Aug 5, 2019 at 13:06
  • @rene I'd never logged into to SU before. I may have visited the odd page before. However, I was technically still logged in to my other SE sites, but something may have gone off.
    – benwiggy
    Commented Aug 5, 2019 at 13:45
  • Okay, that could explain why logging out and back in fixed it, you have received new browser cookies for super user and all other SE domains by doing that.
    – rene
    Commented Aug 5, 2019 at 13:47

2 Answers 2

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You can join other Stack Exchange community, when you are already logged-in.

  1. Click on the Stack Exchange icon in the top bar, once the pop up is open, scroll down to find the "More Stack Exchange Communities" text box. Enter Super User in the text box and from the list click the link to open the superuser.com

    enter image description here

  2. Now you can see the "Join the Community" button, clicking on the you can see another window

    enter image description here

  3. Clicking on the "Confirm new account" will create a user account in Super User with your current credentials

    enter image description here

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  • 5
    I don't get the "Join This Community" button. I just get FaceBook or email login options. I was able to join this group, but not super user.
    – benwiggy
    Commented Aug 5, 2019 at 12:02
  • @benwiggy Can you able to access this URL to create an account in the Super User superuser.com/users/join?ssrc=hero&returnurl=https://…
    – Arulkumar
    Commented Aug 5, 2019 at 12:31
  • 2
    Fixed it: Logged out and back in, and then I could join.
    – benwiggy
    Commented Aug 5, 2019 at 12:59
  • 3
    Doesn't work. It's in different domain, so apparently the cookies don't recognize me being logged eg. here.
    – Agent_L
    Commented Jan 8, 2021 at 14:36
0

It seems to work a bit different now then explained in the other answers (I can't comment on that one yet, since I am new on this community (having just used my Stack Overflow account to join here)). There does not seem to be a “Join this Community” button anywhere anymore.

But, when clicking the above-mentioned Stack Exchange icon in the top bar in a Stack Exchange site you are logged into, you see "Your communities" (above the "More Stack Exchange communities" part which the previous answers tried to use). You can press edit on the right and search for other communities (e.g. Super user). Once you see the one you want, you can add it and Save.

Now, when you change to this community, you will still have to log in first. But you can use your existing credentials from the community that you used to log into before (e.g. from Stack Overflow). You will then get the same message mentioned above, about linking the account. You have to confirm this.

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