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October 9, 2025
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Request for Zen Browser communication to app Support in 1Password (linux)

  • October 9, 2025
  • 2 replies
  • 132 views

The 1Password browser extension cannot connect to the 1Password desktop application when using Zen Browser, despite native messaging being correctly configured. This results in fingerprint and other quality of life not working on Zen.

The connection fails because 1Password's BrowserSupport binary rejects Zen as an "UnknownBrowser".

- OS: Linux (Arch-based)
- 1Password: Version 8.x (Linux desktop app)
- Zen Browser: Version 1.16.3b (Firefox-based, using Gecko 143.0.4)
- Extension ID: `{d634138d-c276-4fc8-924b-40a0ea21d284}` (1Password extension version 8.11.12.27)

1. : The native messaging host configuration (`com.1password.1password.json`) is correctly placed in all standard locations:

   - `~/.mozilla/native-messaging-hosts/`
   - `/usr/lib/mozilla/native-messaging-hosts/`
   - `~/.zen/native-messaging-hosts/`

2.  When the 1Password extension in Zen attempts to connect, the BrowserSupport binary IS successfully invoked with the correct parameters.

3. **Failure Point**: The BrowserSupport binary immediately returns:
 

 ```json
   {"type":"Notification","content":{"type":"BrowserVerificationFailed","content":"UnknownBrowser"}}
   ```
   Exit code: 1

4. The BrowserSupport binary appears to have a whitelist of supported browsers and doesn't recognize Zen Browser's identity, despite Zen being a Firefox-based browser.

Please consider adding Zen Browser to the list of supported browsers in 1Password's BrowserSupport binary. The browser's application identifier is:
- **Name**: Zen
- **RemotingName**: zen
- **Application ID**: `{ec8030f7-c20a-464f-9b0e-13a3a9e97384}`

If you need any additional technical details or testing assistance for Zen Browser support, I'd be happy to help provide that information.

NB! Fingerprint works fine on Firefox on the same machine. Just not on Zen, because apparently "unknown browser" on your side. Also I am not sure, but its possible same issue occurs on MacOS(too lazy to test)

Best answer by 1P_Dave

Hello @georges1q! 👋

Thank you for reaching out! Zen Browser isn't an officially supported browser so it won't work right out of the box but you can choose to connect it to 1Password for Linux using this guide: 


Let me know if you run into any issues. 

-Dave

2 replies

georges1qAuthor
October 9, 2025

Apparently on mac you can add a browser manually by going inside the 1password app and add a browser. This option is missing on the linux app (arch)

 

1P_Dave
1P_DaveAnswer
1Password Employee
October 9, 2025

Hello @georges1q! 👋

Thank you for reaching out! Zen Browser isn't an officially supported browser so it won't work right out of the box but you can choose to connect it to 1Password for Linux using this guide: 


Let me know if you run into any issues. 

-Dave

georges1qAuthor
October 10, 2025

That actually worked! Thanks

1P_Dave
1Password Employee
October 10, 2025

I'm happy to help! 🙂

-Dave