Bit Locker triggers cause requirement for reauthentication
BitLocker triggers recovery mode when it detects unexpected hardware, firmware (BIOS), or security configuration changes, often caused by Windows updates, USB-C docking stations, or battery drain. If the key is missing from Entra ID/M365, the device was likely set up using a personal Microsoft account first, or it was never properly joined/enrolled in Entra/Intune before encryption activated.