Firefox in Mac: "Biometric unlock is unavailable because the Bitwarden desktop app is closed."

Hello!

I am using Firefox 150.0.1 (aarch64) on my Macbook with MacOS 26.5 Beta (25F5068a) (also tried with 26.4 stable)

Browser integration is activated:

on Chrome it is working perfectly fine but firefox is causing troubles.

Re-installation of bitwarden and firefox was not successful.

Extension-Version:

Version: 2026.3.0

SDK: ‘main (7637fdf)’

Server version (Third-party): 2025.12.0

Connected to third-party server implementation, Vaultwarden. Please verify bugs using the official server, or report them to the third-party server.

@CrossiiDev-Studio Welcome to the Bitwarden Community Forum!

It seems, you are using an unofficial server software, which is not supported by Bitwarden, as it is an independent product. From time to time, there will be compatibility issues between the official Bitwarden client apps (browser extension, mobile app, desktop app…) and an unofficial server product, when Bitwarden implements changes to its own server software and/or client apps. “…Bitwarden cannot guarantee that official clients will work perfectly with non-official servers.”

(Also due to this - and for other reasons - we recommend using the official Bitwarden server software.)

It is generally not possible for members of the Bitwarden community (users or developers) to help with such issues - and with issues of the unofficial server itself. Please seek support in their community spaces.

If you can replicate your issue on an official Bitwarden server, feel free to open a new thread here.


PS: Your unofficial server version is outdated – make sure to keep it up-to-date. And as you’re using Firefox on MacOS, also have a look into this bug report: [PM-32274] NativeMessagingHosts file seems to be missing in some cases for Firefox (at least on MacOS) · Issue #18996 · bitwarden/clients · GitHub