Hi Jen Crawford,
Thank you for reaching out. I know how stressful it can be to suddenly lose access to your own files, especially when this wasn’t something you expected or intentionally set up. It’s completely understandable to hope there might be another way to get your data back.
When a drive is protected with BitLocker, access depends on the recovery key that was created when encryption was enabled. That key may still exist, even if it’s not immediately obvious where it was saved. To check, it’s best to start with any Microsoft accounts you may have used on this device. From another phone or computer, sign in to your Microsoft account and visit the BitLocker recovery page. If you’ve used more than one Microsoft account in the past, it’s important to check each one, as the key is tied to the account that was used when Windows was first set up. When reviewing the list, look for a recovery key whose Key ID matches the first 8 characters shown on the BitLocker screen.
If the device was ever connected to a work or school account, even briefly, the recovery key may have been saved there instead. In that case, signing in with the work or school account or checking with the organization’s IT administrator can sometimes help locate it.
It’s also worth checking for any physical or local copies of the key. Some people choose to save the recovery key to a USB drive or as a text file or print it out during setup. Looking through older USB drives, backup folders, cloud storage or paperwork where system-related information might be kept can sometimes turn up the key.
If none of those locations have the recovery key, then unfortunately there isn’t a supported or reliable way to access the data on the drive itself. BitLocker encrypts everything at a very deep level, and without the correct key, the information remains unreadable by design. Even Microsoft doesn’t have a way to unlock or recreate a missing recovery key, as this protection is intentionally built to keep data secure.
If the key truly isn’t available, the remaining option would be to reset or reinstall Windows using a recovery image. This allows the device to be used again, but it does mean the existing data on the drive would be removed.
If you’d like, I can help walk you through what the reset process would involve so you know exactly what to expect. Please feel free to let me know how you’d like to proceed.
If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.