# OKey Duo with Protonmail not working on Firefox **URL:** \ **Category:** Challenge-Response\ **Created:** [February 3, 2024, 1:27pm UTC](https://onlykey.discourse.group/t/okey-duo-with-protonmail-not-working-on-firefox/1215 "2024-02-03T13:27:27Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![lebor](https://avatars.discourse-cdn.com/v4/letter/l/977dab/32.png) [@lebor](https://onlykey.discourse.group/u/lebor)\ **Post date:** [February 3, 2024, 1:27pm UTC](https://onlykey.discourse.group/t/okey-duo-with-protonmail-not-working-on-firefox/1215/1 "2024-02-03T13:27:27Z")
Hi, I used to use Okey Duo with Protonmail on Firefox just fine. However now I am not able to auth using it. The pop up window that appears when I attempt to sign in has changed. It now asks for iphone, ipad, android device or security key. When I select security key, I get three more options (attached image) and the okey light doesn’t turn to blue as it would when awaiting a user input (touch) to authenticate. Has anything changed with Firefox? ![3](https://global.discourse-cdn.com/free1/uploads/onlykey/original/1X/d3658df3ec21307c961e09b3c0b240d2cd41a38e.png) ---
**Author:** ![SecureUser](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@SecureUser](https://onlykey.discourse.group/u/SecureUser)\ **Post date:** [February 5, 2024, 7:44am UTC](https://onlykey.discourse.group/t/okey-duo-with-protonmail-not-working-on-firefox/1215/2 "2024-02-05T07:44:07Z")
I tested ProtonMail login with my OnlyKey DUO and it works without problems. Context: OS: ArcoLinux (fork of Arch Linux) Kernel: 6.7.3-arch1-2 Browser: Librewolf 122.0-1 (fork of Firefox) If you want help you wil need to provide more details, but it is probably something wrong with your OS or browser, not with OnlyKey. ---
**Author:** ![lebor](https://avatars.discourse-cdn.com/v4/letter/l/977dab/32.png) [@lebor](https://onlykey.discourse.group/u/lebor)\ **Post date:** [February 7, 2024, 10:45pm UTC](https://onlykey.discourse.group/t/okey-duo-with-protonmail-not-working-on-firefox/1215/3 "2024-02-07T22:45:19Z")
Yeah it seems it’s a browser thing as it’s working on Brave for Protonmail. For more context I wanted to upload more screenshots and describe them but this forum won’t allow me attach more than one picture as relatively new user here. Thanks anyway. ---
**Author:** ![Stammer9222](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@Stammer9222](https://onlykey.discourse.group/u/Stammer9222)\ **Post date:** [February 10, 2024, 10:00pm UTC](https://onlykey.discourse.group/t/okey-duo-with-protonmail-not-working-on-firefox/1215/4 "2024-02-10T22:00:59Z")
You should file a bug with firefox ---
**Author:** ![lebor](https://avatars.discourse-cdn.com/v4/letter/l/977dab/32.png) [@lebor](https://onlykey.discourse.group/u/lebor)\ **Post date:** [March 7, 2024, 12:56pm UTC](https://onlykey.discourse.group/t/okey-duo-with-protonmail-not-working-on-firefox/1215/5 "2024-03-07T12:56:40Z")
this is looking more like a Mac OS issue. ---
**Author:** ![Expat01](https://avatars.discourse-cdn.com/v4/letter/e/f07891/32.png) [@Expat01](https://onlykey.discourse.group/u/Expat01)\ **Post date:** [February 8, 2025, 3:41am UTC](https://onlykey.discourse.group/t/okey-duo-with-protonmail-not-working-on-firefox/1215/6 "2025-02-08T03:41:40Z")
OP, I’m having a similar problem. I recently set up OnlyKey with Protonmail on Mac OS. I also added an authenticator app & retrieved my recovery code. But I can’t log in with my OnlyKey as 2FA even though nothing else has changed (same computer…). I tried both Firefox & Brave. I keep getting a “wrong credentials” error message. Using a password manager. I can also login fine using same PW manager & 2FA authenticator app on my phone. Alarming. would prefer to use security keys, but if they’re so sensitive to behind-the-scene OS or browser mechanics as I’m reading online, they may not be as robust as I thought.