Your organization has blocked sign-in because your computer does not have mobile device management (MDM) turned on. Follow the steps below to resolve.
Click the Fleet icon in your menu bar, and select My device:
Click Turn on MDM
After enrolling in MDM, click the notification you receive from Microsoft Entra and complete registration.
After registration in Entra, click the Fleet icon in your menu bar, and select My device
Click the Refetch button: