Knowledge base · practical guide
Why is Windows asking for a BitLocker recovery key?
BitLocker encrypts a drive to help protect its data. Windows may ask for the recovery key after a hardware, BIOS or security-setting change.
Where to look for your key
- Check the Microsoft account that was used on this device.
- Look for a saved or printed copy from when BitLocker was set up.
- For a work or school device, ask the organisation’s IT administrator.
Why can the prompt appear?
- A BIOS or UEFI setting may have changed.
- Hardware or security settings may have been changed.
- A system update or unexpected change can trigger a recovery check.
What should you do?
- Stay calm and first look for the recovery key associated with this device.
- Avoid random BIOS or security changes; they can make troubleshooting harder.
- Do not send your recovery key in a public message. If you are unsure, ask for help before proceeding.