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Clear the browser's cookies (and perhaps cache/history). 'Trust this computer' option doesn’t work For computers you trust, Google recommends you select the "Trust this computer" option when you are asked for a verification code. When you check this box, you won’t have to enter a code every time you sign in to your account from that computer. ...

I found it: When you visit you Google Account Settings, you can select Security in the sidebar menu. It will list 2-factor authentication. Click the edit button next to it. This will lead you to this page: https://accounts.google.com/b/0/SmsAuthConfig At the bottom of the page there would be a section about Trusted Computers. It will say that the ...

You surely can. The Google Authenticator app allows you to add as many accounts as you like! As Dez mentions correctly, in addition to this, you can also use the same phone number for multiple text messaging authentication accounts.

If you click "Can't scan the QR code?" during device setup, the secret key is displayed. You can then store that secret key VERY securely (think: printed in a safe, GPG encrypted with a strong key, or whatever) and add it to new devices without having to get all devices together and re-key them all at once. If your secret key is exposed you lose all ...

Temporarily turning off 2-factor is not an ideal situation. Depending on the number of users, you could be chasing the user to get it setup so you can turn it back on. After while, you will just leave it off. We recommend you create a suborganization called something like "Pre-2-factor" and move the new user into the suborg. That suborg has the 2-factor ...

It sounds like you have 2 factor authentication Enforcement turned on for the domain: I'm thinking you could turn that off so all users are not forced to have 2 factor authentication. The best answer I could find if you want to leave that setting enabled would be to setup an exception group: Have all users and administrators enroll in 2-step ...

According to Google Support: Removing trusted computers from your list You can remove computers from your set of trusted computers at any time. To do so, sign in to your account and go to your 2-step verification settings page. Under the “Advanced” section, you’ll have the choice to remove the computer you’re using at the time or all other ...

Google does not provide us any way to manually set the expiration limits of the verification cookies. This is an excellent case to offer up to them as a suggestion for them to add and option during issue time to auto revoke the code after a certain amount of time. Until Google implements some form of expiration control you could as manually change the ...

First, I don't really know if Google Authenticator works with static security keys, but if they do, such a key is probably a lot longer than your usual password would be. EDIT: I can't find an example of suck a security key, I have to turn 2-factor auth off and on to get a new one, but @Basilevs suggests that they are only 10 characters long. Second, it's ...

Yes, login approvals have been disabled by facebook, as new features and shortcuts are being added. Also, if you try the same phone number on multiple accounts then they're being disabled but as soon as possible they will be enabled soon. Another method is, if they have been automatically disabled from your account then try to create a strong password ...