Final answer:
To use Windows Hello for Business on device2, you should set up a new PIN.
Step-by-step explanation:
To use Windows Hello for Business on device2, you should set up a new PIN.
If you're using Windows 10 on two devices, device1 and device2, and you want to use Windows Hello for Business on both, you will need to set up Windows Hello for Business on each device individually even if they're using the same Microsoft account. The correct step to take on device2 is to set up a new PIN specific to that device.
Windows Hello for Business is designed to be tied to the specific hardware of a device for added security, and thus, even with the same Microsoft account, the PIN is unique to the hardware it was set up on.
Windows Hello for Business allows users to sign in to their devices using biometric data, such as fingerprints or facial recognition, or a PIN. Since you have already configured Windows Hello for Business to use a PIN on device1, you need to set up a new PIN on device2.
Using the same PIN as device1 will not work as each device needs to have its own separate PIN for Windows Hello for Business.