A new Surface Pro 4 firmware 18.104.22.168 is now rolling out. The latest firmware update will fix the Windows Hello issue in Pro 4 devices.
Almost two weeks ago, Microsoft released firmware and driver updates for the Surface Pro 4. However, many users began reporting that the Windows Hello camera on their tablet wasn’t working anymore.
Surface – System – 22.214.171.124:
Surface Camera Windows Hello – 126.96.36.199 resolves Windows Hello experience error.
This update improves reliability and doesn’t affect security, connectivity, compatibility, performance, or battery life.
To grab the new update, you can head over to Settings -> Security & updates -> Windows Update -> Check for updates.