I have thoroughly investigated your case with my own D415 and I was not able to access Windows Hello setup either, being told that the camera cannot be started. It functions fine in the RealSense Viewer tool and other SDK tools though.
The Windows 10 UWP (Universal Windows Platform) driver for 400 Series cameras was recently removed temporarily by Intel. I wonder if this may be a cause of the camera being unable to talk to Windows Hello. You are the first person I have heard from who has tried to use Windows Hello with the new cameras since their release.
Hopefully Intel will provide an official response on this message about whether the D415 is compatible with Windows Hello.
This message was posted on behalf of Intel Corporation
Hello Skwerl and Marty,
The link to get the UWP driver is the following:
Feel free to download and use it.
I have checked with engineering and they have confirmed that support for Windows Hello with the new D400 family will never be developed. This is the reason why Skwerl is not able to configure it.
Thanks for your understanding.
Never be developed? That's a shame, as that was the reason why I ordered the camera. I know a lot of folks who ordered the earlier Realsense dev kits for this reason, so I assumed that newer versions would also support it. I'm disappointed. I would have ordered the older version had I known that.