[PM-38800] `Deutsche Telekom`: passkey does not work

[WebworkrNet]

Origin

Web (Browser)

Web URL or App name

accounts.login.idm.telekom.com

Passkey Action

• Creating new passkey (Registration)
• Signing in (Authentication)

Build Information

© Bitwarden Inc. 2015-2026

Version: 2026.4.2 (21562)
📱 samsung SM-A176B 🤖 16@36 📦 prod
🧱 commit: 2e88a41
💻 build source: bitwarden/android/actions/runs/25866701011/attempts/1
🦀 SDK: 2.0.0-6825-release-hotfix-v2026.4.1-bwpm
🌩 Server: 2026.5.0 @ EU

Additional Information

Passkey: Deutsche Telekom presumably does not support third-party providers (like Bitwarden) and only allows a single key to be stored.

In the past, however, creating and logging in using Google's passkey worked without any problems.

Issue Tracking Info

• I understand that work is tracked outside of Github. A PR will be linked to this issue should one be opened to address it, but Bitwarden doesn't use fields like "assigned", "milestone", or "project" to track progress.

[bitwarden-bot]

Thank you for your report! We've added this to our internal board for review.
ID: PM-38800

[WebworkrNet]

The login domain can be accessed at https://www.telekom.de.

[pamperer562580892423]

Which browser do you use?

[WebworkrNet]

Firefox (Nightly)

153.0a1 (Build #2016165927), f7f8e60b2f7ee2372b12925efb7d8cc05c2dbcdc
GV: 153.0a1-20260609090656
AS: 153.20260605050214
OS: Android 16

In the past, I had also tested other versions of Firefox as well as Chrome.

[pamperer562580892423]

In the past, I had also tested other versions of Firefox as well as Chrome.

Hm, could you try it with Chrome or another Chromium-based browser again? In my own experience, Firefox can have issues with passkeys (especially recently).

[WebworkrNet]

In the past, however, creating and logging in using Google's passkey worked without any problems.

Addendum / correction:
Google Passkeys are synchronized. While a passkey set up on one device is available locally on another device, it is not recognized by the Telekom website.

[WebworkrNet]

In the past, I had also tested other versions of Firefox as well as Chrome.

Hm, could you try it with Chrome or another Chromium-based browser again? In my own experience, Firefox can have issues with passkeys (especially recently).

I was able to set up a passkey in Bitwarden using the latest version of Chrome.
Once it was set up, I could log in using both Chrome and Firefox. :-)

Let’s hope it works across devices now. My second Android device is currently in for repairs, so I can’t test that right now.

I’ve also experienced that Firefox sometimes fails in certain cases, which is why I’ve opened a few issues with Mozilla.

Sorry that I didn’t test it again in Chrome before opening this ticket.

Chrome 149.0.7827.60

[pamperer562580892423]

@WebworkrNet Thanks for testing it with Chrome.

Honestly, I'm just another user. I do hope this issue will remain open.

I really wonder if this a sole Firefox issue - or (also) an issue with the Bitwarden app. I hope this gets investigated.

[WebworkrNet]

See also:
https://bugzilla.mozilla.org/show_bug.cgi?id=2046244

[WebworkrNet]

@pamperer562580892423
Thanks for clarifying what your role is here and for your support. 🙂

[TroyBW]

Hi there,

I'm happy to hear you were able resolve the issue. We use GitHub issues as a place to track bugs and other development related issues. If your issue occurs again, please write us back using our “Contact support” form located on our Help Center (https://bitwarden.com/help/).

Alternatively, you can also search for an answer in our help documentation or get help from other Bitwarden users on our community forums (https://community.bitwarden.com/c/support/).

The issue here will be closed.

Thanks!