This post is about BitLocker drive encryption, Bluetooth support, CNG key isolation, Device association Windows system services:
1) BitLocker drive encryption service: BitLocker drive encryption Windows service is used for encrypting drives by using BitLocker. If you are using BitLocker in your computer then this service must be enabled. If this service is disabled then drives will not be encrypted.
2) Bluetooth support service: Bluetooth support Windows service is used for connecting Bluetooth devices with you computer. If this service is disabled then you cannot connect any device with you computer by using Bluetooth.
3) CNG key isolation service: CNG key isolation Windows service is used for protecting the keys involved in cryptographic tasks. This service should be enabled to make sure that cryptographic tasks are running smoothly in your Windows computer.
4) Device association service: Device association Windows service is used for pairing the Windows computer with different wired and wireless devices. This service should be enabled to make sure that wired and wireless devices are working properly in your Windows computer.