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Forum Discussion
1PW iOS's MFA code for AWS login is not being calculated correctly
Hi all,
A couple weeks ago our DevOps team rotated the MFA code for our root AWS login.
We get to the point where we scan the 2D barcode.
I scan the 2D barcode with my iOS 1PW app -- which...
GreyM1P
1Password Team
1Password TeamAs of this moment...they match?!?
That's great! I can't say for sure what happened previously, but if I had to take an educated guess it might be that your iPhone's clock re-synced with internet time since then.
So why would 1PW's generated TOTP code be WRONG...and the Microsoft Authenticator be CORRECT?
It could be (although I don't speak for Microsoft here of course) that Microsoft Authenticator is using internet time rather than the local clock for its source of time. That relies on an internet connection at all times, of course – if that is the case – whereas 1Password uses the system clock which doesn't.
Generally speaking, the system clock on most devices is set automatically according to internet time, so although I can't say for sure what's happened in your case when it wasn't working, it sounds like it is now.
Keep an eye on things and let us know if you run into any similar trouble in the future.
