I was told that the code is invalid and can be used only once. Had to login using a backup code.
Oh, I didn’t know there is 2FA! @_MP
I experienced this, too, using Google’s Authenticator app.
Switched to Microsoft’s Authenticator and things work smoothly now.
Is the 2FA required on every log-in, or is it once you’ve authenticated a computer, it doesn’t ask again? I wouldn’t mind registering once per computer, but wouldn’t want to do it each time I use the website.
It’s using TOTP, the app generating the code shouldn’t matter.
Weird… Nothing changed on the forum (I mean, I make sure we’re always updated to its latest version). Please let me know via DM if you encounter the issue another time.
For TOTP (this is what Google Authentificator uses) it is important that the time and date are correct.
Thanks for your advice.
Despite having worked for Google I didn’t want to insist on the Google Authenticator working for this* but was happy that the Microsoft Authenticator just worked when I first tried.
I attribute this non-discriminating attitude to getting older – I won’t insist on being right as long as it works. Both authenticators probably offer about the same level of security, even if I have only had exposure to an inside view at one of them.
* Admittedly I disabled 2FA, de-registered and tried to re-register with the Google Authenticator app, but no luck.
I’ll say it felt a little odd since the Google Authenticator app had worked for years until it didn’t.
TOTP should use the same algorithm, so I guess it is just a time issue. Can you verify that each app produces the same code? Maybe you can see if one generates with a delay.
Pay me for debugging this as you suggest and I’ll do it.
If not, I’ll waste my time instead on posting comments like this one on this forum.
Well, if you photograph the QR code on both apps, you should see the code on both.