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wtf.. sent a security code that firefox won t recognize?? why

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I try too login to firefox and the page asks me to verify that it is me by sending a code to my e-mail. When I enter the code , firefox browser says it is invalid!!! and then it goes into a return cycle over and over.

I try too login to firefox and the page asks me to verify that it is me by sending a code to my e-mail. When I enter the code , firefox browser says it is invalid!!! and then it goes into a return cycle over and over.

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Security code for what? No login is needed to just use Firefox.

For Firefox Sync?

What type of email service is being used to receive the email security code?

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Is this a confirmation for the Sync account?

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • Do NOT click the "Refresh Firefox" button on the Safe Mode start window

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen or hold down the Shift key) to see if that has effect.