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I am facing a problem with Firefox when logging onto my Stack Overflow account. I click on "log in," then I choose "connect with Facebook." But after that, nothing happens, except for the redirection to the main page. If I try to log in again, a message displays on the top of the page telling me that I am already connected.

Notice: this problem did not exist on Chrome in my case.

This is the picture of my case:

enter image description here

marked as duplicate by Arjan, Hugo Dozois, Martijn Pieters, hims056, Aziz Shaikh Dec 7 '13 at 16:36

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  • Disable all add-ons/extensions/plugins you have in Firefox. 99% the problem will go away. – Shadow The Princess Wizard Nov 7 '13 at 13:55

It seems to be a caching issue: when the "Welcome back" message appears, you have been logged in. When you are shown the home page, though, it is still the old one.

If this happens again try clearing your browser's cache and hard-refresh the page.

  • i cleared the browser's cash and hard-refresh the page but nothing changed . – oussama.elhadri Oct 8 '13 at 13:12
  • OK, are you behind a proxy? It could also be that. – Sklivvz Oct 8 '13 at 13:17
  • i don't think so ,i am using the default configuration of Firefox.and i changed from system proxy to without proxy , but the same problems. – oussama.elhadri Oct 8 '13 at 13:46
  • A very long shot: can you confirm that you are using the same browser for logging in and browsing? I see a lot of mixed User Agents in the logs? – Sklivvz Oct 8 '13 at 15:24
  • because i can not logging onto my Stack Overflow account with Firefox , i am using now Chrome. – oussama.elhadri Oct 8 '13 at 15:33
  • Just in case you didn't know, your colleague Anna wrote multiple times that clearing the browser history (not the cookies or cache) might help, for Firefox. – Arjan Dec 7 '13 at 14:13

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