turn off bit locker
Click Start, click Control Panel, click System and Security, and then click BitLocker Drive Encryption. Look for the drive on which you want BitLocker Drive Encryption turned off, and click Turn Off BitLocker. A message will be displayed, stating that the drive will be decrypted and that decryption may take some time.
source [https://www.manageengine.com/products/os-deployer/help/how-to-disable-bitlocker-encryption.html#:~:text=Click%20Start%2C%20click%20Control%20Panel,decryption%20may%20take%20some%20time.
