I woke up this morning with the same problem as the original poster - BitLocker locked an external hard disk unbeknownst to me ... and of course I have no 48-digit recovery key or password because I didn't ask for it to do this - and am now freaking out.
This thread, and Microsoft, have been ABSOLUTELY WORTHLESS on solving this problem.
Here is what I've found out in my research in case it's helpful to others with the same problem. I should note that my laptop is a corporate issued laptop.
Why I think BitLocker Automatically Locked My External Hard Disk
My laptop's C drive is encrypted with BitLocker (but doesn't require this 48-digit recovery key). I turned Bitlocker off on my C drive to see if that would help. It decrypted the C drive but didn't unlock my external HD unfortunately. But I did find a clue:
about an hour after turning BitLocker off, I noticed that the program "McAfee Management of Native Encryption" (MNE) automatically turned BitLocker on and started encrypting my C drive. I once again turned BitLocker off (via the Control Panel) but once again,
McAfee MNE started it back up after a short time. I suspect this is what may have started the BitLocker encryption of my external HD without me initiating it. Maybe I kept the external HD plugged in too long and it got caught up in a McAfee MNE "I gotta encrypt
everything" cycle?
So, I may have answered the "why BitLocker encrypted/locked my external HD" question, but I still have a worthless, locked HD that I can't access. On to that problem (after uninstalling McAfee MNE of course):
Unlocking my External HD - Getting my 48-digit Key
Here is what I tried but was worthless:
- My Microsoft account online, of course did not have my password
Here is what I tried, and was worthwhile in providing clues (and may be solve the problem for you), but didn't work for me:
- Using "manage-bde -protectors -get d:" (where "d:" is your locked drive) as described in this
thread from NCBrady's website.This command seems to give me info about the locked drive, but unfortunately it did gave me everything except the 48 character numerical password.
Here is what I still have to try:
- Contacting my corporate support group - I have an email in to them, but of course it's the 4th of July holiday so a response may not be imminent