At Dropbox, I've enabled 2FA, but, recently, I've been unable to use my Yubikey 4 as a means to satisfy 2FA. Instead, I need to chose SMS 2FA, sending a six (6) digit code to my phone. Previously, I had set up -- and used -- my Yubikey 4 to satisfy 2FA at Dropbox. Now, over the past several weeks or so, my Yubikey 4 no longer works. I've tried deleting my Yubikey 4 at Dropbox and then re-establishing it as a means to satisfy 2FA. Each time, Dropbox accepts the Yubikey 4. But, then, next time I attempt to log-in to my Dropbox account, the Yubikey 4 no longer works. I'd love to use the Yubikey 4, since I use it at multiple other log-ins, including Vanguard. Thanks in advance for any help!
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Hi there, what browser are you using when logging into the Dropbox site using the Yubikey?
Firefox Quantum Version 62.0.3 (64-bit) works.
Chrome Version 70.0.3538.67 (Official Build) beta (64-bit) + incognito + no extensions + cache clear + reset browser in full fails to work.
Chrome Version 70.0.3538.67 (Official Build) (64-bit) fails to work.
Note neither Facebook nor Vanguard, two sites with a fair bit of activity, require a switch to Google Chrome non-beta or the use of incognito with no extensions, a cleared cache, and a full reset. To me, this, coupled with the above, is a clear indication the problem resides with Dropbox.
Unfortunately, I'm unable to run Firefox; and, given the lack of any other problems with Google Chrome Chrome Version 70.0.3538.67 (Official Build) beta (64-bit), I'm switching back to my original set-up.
I respectfully suggest the problem is likely easy or very easy to solve at Dropbox.
<What exactly happens when using the key? Does it produce the code in general, say by opening a search bar and tapping the key?>
At Dropbox, after entering my user name / email address and password, the standard sign-in window appears -- 'Sign in' at the top, with an image of the key below; text beneath the key states 'Insert your security key to use it' and 'After inserting, tap your key if it has a button or gold disk' -- together with a new small window at the top of the browser. I've attempted to attach a copy of the screen-shot but the window here at dropboxforum.com returns '(a)n unexpected error has occurred' twice.
<Does it work on other sites?>
Yes. The Yukikey works perfectly at both Vanguard and Facebook.
<Are you able to test the Yubikey on another USB port, computer, or network even, using the same version of Chrome?>
I've switched ports to no effect or use. And I've switched computers, also to no effect or use. Unfortunately, I'm unable to switch networks.
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