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I had a separate log in account for mathoverflow. Now, I'm unable to log in into that. I see only options of logging in using google, facebook, stack exchange etc but no option of logging using mathoverflow. How can I access my old account?

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  • $\begingroup$ Can you point to the account corresponding to your old user? You should be able to find the profile page with the search box at meta.mathoverflow.net/users. $\endgroup$ – Anton Geraschenko Jun 25 '13 at 4:20
  • $\begingroup$ This is my old account. mathoverflow.net/users/18503/john $\endgroup$ – john Jun 25 '13 at 4:21
  • $\begingroup$ I also had to create a new account. Could someone merge them? Thanks! Old account: mathoverflow.net/users/8838/dls $\endgroup$ – dls Jun 25 '13 at 4:32
  • $\begingroup$ My accounts got merged, but I still show up with rep 101 in meta. $\endgroup$ – Michael Greinecker Jun 25 '13 at 6:34
  • $\begingroup$ Could someone merge my accounts too? They are mathoverflow.net/users/3603/wouter-stekelenburg and mathoverflow.net/users/35398/user27375. I prefer the full name one. $\endgroup$ – Wouter Stekelenburg Jun 25 '13 at 7:39
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    $\begingroup$ It seems like this issue is affecting a lot of people. Is there no way the merging can be automated? I'm meta.mathoverflow.net/users/35567/ben-millwood and mathoverflow.net/users/26698/ben-millwood $\endgroup$ – Ben Millwood Jun 25 '13 at 15:36
  • $\begingroup$ I'm going to delete answers to this question which have been resolved (i.e. when a user has been merged, and has shown some activity indicating that they were able to use their old account), so that it's easier to keep track of outstanding unmerged accounts. $\endgroup$ – Anton Geraschenko Jun 26 '13 at 4:51
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    $\begingroup$ It seems very impractical/tedious for this error to keep being fixed on an individual basis; Ben Millwood's comment is very apt. $\endgroup$ – user61789 Jun 26 '13 at 6:38
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What can I do?

This is a simple issue that can be quickly rectified by following the steps below:

  1. Go ahead and create a new account using whatever authentication service you were using previously. Make a note of the profile URL - you can get to the new profile by clicking on your user name at the top of the page. Keep this handy.

  2. Locate your original profile URL, if you don't already know it. You can do this by going to the users page and entering your user name. Keep this handy as well.

  3. Contact Stack Exchange and provide them both links, and indicate that you can no longer access your account and have made a new one.

  4. Wait for a short while, you'll receive a reply indicating that you can now access your account. We try to process these as soon as they come in during the transition and we have overlapping coverage in many time zones.

Please, use the link to contact the team directly as that's where they're monitoring for requests to fix this issue. If you post here, it might be a while before someone from the team sees your request.

Why did this happen?

This happened because your OpenID provider is now returning a different email address during authentication than it did when you originally registered, so the system does not recognize you properly. This is why the system is asking if you want to create a new account.

How do you fix this?

By asking you to create a new account to merge with your established account, we ensure that you'll log in properly when either email address is returned during authentication. Once done, it will be as if this never happened, and no remnants of the temporary account you created for merging will remain.

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  • $\begingroup$ Thank you very much! $\endgroup$ – john Jun 25 '13 at 4:26
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    $\begingroup$ Where can mods merge users? I expected it under mod > links, but I can't find it there. $\endgroup$ – Anton Geraschenko Jun 25 '13 at 4:34
  • $\begingroup$ Since I saw in the chat room that you had the double account problem, @AntonGeraschenko, and that you contacted the SE people to merge, I had assumed that mods couldn't now merge accounts and so I contacted the SE people when the same thing happened to me. $\endgroup$ – Omar Antolín-Camarena Jun 25 '13 at 4:50
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    $\begingroup$ @Anton, they removed the moderator merge a few months ago. The instructions for users to request merging of their accounts is here: mathoverflow.net/help/merging-accounts $\endgroup$ – Kaveh Jun 25 '13 at 6:39
  • $\begingroup$ @Geoff Dalgas I've got the same problem. Could you please merge the accounts meta.mathoverflow.net/users/35381/andrew and mathoverflow.net/users/14551/andrew? $\endgroup$ – Andrew Jun 25 '13 at 6:41
  • $\begingroup$ Done @Andrew - enjoy! $\endgroup$ – Geoff Dalgas Jun 25 '13 at 6:42
  • $\begingroup$ @Geoff Dalgas Thank you! $\endgroup$ – Andrew Jun 25 '13 at 6:43
  • $\begingroup$ @Geoff: Same problem with me. could you merge this account with mathoverflow.net/users/22302/bezirsk ? $\endgroup$ – bezirsk Jun 25 '13 at 8:09
  • $\begingroup$ Could you please merge my account, too. Thanks! $\endgroup$ – Alex B. Jun 25 '13 at 8:19
  • $\begingroup$ I should have said that I was Alex Bartel on the old MO. And thank you for the good work! $\endgroup$ – Alex B. Jun 25 '13 at 8:24
  • $\begingroup$ @GeoffDalgas I have the same problem. New account is user35429. Old account is user10833. Both are under the same user name scaaahu. Would you please merge them? Thanks. $\endgroup$ – scaaahu Jun 25 '13 at 9:39
  • $\begingroup$ I have the same problem: my old account is mathoverflow.net/users/5513/kevin-ventullo $\endgroup$ – Kevin Ventullo Jun 25 '13 at 9:49
  • $\begingroup$ This mathoverflow.net/users/30967/dilaton and this mathoverflow.net/users/35461/dilaton should get merged too ... $\endgroup$ – Dilaton Jun 25 '13 at 10:34
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    $\begingroup$ Note: everyone above this line has been taken care of $\endgroup$ – Nick Craver Jun 25 '13 at 12:47
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    $\begingroup$ All set @PeterHumphries - enjoy! $\endgroup$ – Geoff Dalgas Jun 25 '13 at 17:55
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You can just use the "click here to recover your account" link on the login page. You should then receive an email with a link to a form to set a new password. Afterwards you should be able to log in by choosing "log in with Stack Exchange".

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