[Bug] SSH Agent: Authorization popup does not appear on Windows

[HydroTuConnais]

When attempting to connect via SSH using the Bitwarden SSH Agent on Windows, the authorization popup never appears. The connection falls back to password authentication instead of using the SSH key.

Steps To Reproduce

1. Disable Windows OpenSSH Authentication Agent service
2. Enable SSH Agent in Bitwarden Desktop settings
3. Create an SSH key in Bitwarden (generated by Bitwarden, ED25519)
4. Add public key to remote server's ~/.ssh/authorized_keys
5. Restart Bitwarden Desktop
6. Verify agent works: ssh-add -L → displays the key correctly
7. Verify pipe exists: Get-ChildItem \\.\pipe\ | Where-Object { $_.Name -like "*openssh*" } → shows openssh-ssh-agent
8. Attempt SSH connection: ssh user@server
9. Expected: Bitwarden popup asking to authorize the key
10. Actual: No popup appears, connection resets, falls back to password

Environment

• OS: Windows 11
• Bitwarden Desktop version: 2025.12.0
• OpenSSH version: OpenSSH_for_Windows_9.5p2, LibreSSL 3.8.2
• SSH Agent setting: Enabled
• Authorization prompt setting: Tried both "Always" and "Never"

Additional context

• ssh-add -L correctly shows the Bitwarden SSH key
• The named pipe \\.\pipe\openssh-ssh-agent exists
• Windows OpenSSH Agent service is disabled
• Bitwarden Desktop is open, unlocked, and in foreground
• No popup or notification appears at any point

[github-actions[bot]]

Thank you for your contribution! GitHub Discussions is specifically for proposing code that you would like to write for the Bitwarden codebase. Since this post does not appear to include a proposal, it will be closed. If you believe this was done in error or have any questions, please feel free to reach out to us!

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[djsmith85]

@HydroTuConnais Please create an issue over at https://github.com/bitwarden/clients/issues/new/choose, as the bot mentions this is for contribution proposals/discussions.