PC Where Else Your BitLocker Key Might Be: Printouts, USB Drives, Another Account
You signed in to your Microsoft account, opened your BitLocker recovery keys, and found nothing there. Or you found a key, typed it in, and your PC said it was wrong. It is easy to assume the right key is gone for good.
It may not be. When BitLocker was first turned on, the key was often saved in just one place, and that place was not always this account. It could be on a printout, in a saved file, or on a USB drive from setup day.
Work through the other places in order below. Check paper and USB drives first, then other family accounts and any work, school, or shop account this PC has used. If none of them has it, the last section explains the honest last resort and what it costs.
Part of the PC Won't Start? Boot Problems and the BitLocker Recovery Screen, Step by Step series, the pillar guide for this cluster.
First, make sure the search really came up empty
Before you search the house, write down two things. Copy the Key ID shown on the locked PC, exactly as it appears. Then write the email address you signed in with, including if it was an old address or a name spelled a different way. A single different letter means a different account.
Do one short recheck on a phone or a second PC. Open the full list of recovery keys in that account and check every entry from top to bottom. Compare each Key ID with the one you wrote down. Our guide to the screen after an update has the full matching steps.
If the list is empty, or no Key ID matches, that account does not hold the key for this PC. Signing in again with the same address will not change the result. Stop there and work through the printouts, USB drives, and other accounts below. Keep your notes, because you will need that Key ID for every place you check next.
Safety rule: this site never asks for your 48-digit recovery key, and do not type it into any other site, app, or chat.
Look for a printout or a saved file from setup day
When this PC was first set up, Windows offered to save the key as a printout or as a file. Look for a single sheet, a PDF, or a plain text file with the heading 'BitLocker recovery key.' It should show the name of the PC, a Key ID, and the 48-digit key itself, printed in groups of numbers. It may look plain among other setup papers.
Start with the paperwork that came with the PC. Check the purchase folder, a filing cabinet, and any envelope that holds the manual, receipt, or warranty papers. Also check folders and drawers near the printer, since a printout made on setup day was often filed close to where it came off the printer, then forgotten. Look under the PC name too, if your folders are labeled that way.
Next, use a phone or a second PC that you trust. Search your files, email, and photos for the word BitLocker in a file name or message subject. Open a match only on that trusted device, and read the PC name and Key ID before you copy anything down or take it to the locked PC. A photo of a printed page counts as a match too.
Before you type any numbers, match the find to the locked PC. Compare the Key ID on the paper or file with the Key ID you wrote down from the locked screen, letter by letter and number by number. If they match, type the 48-digit key from that copy. If they do not match, leave it and keep searching.
Check every USB drive that might hold the key
When this PC was set up, Windows offered a choice to save the recovery key to a USB drive. Many people picked that option, put the drive away, and forgot about it. The drive often has no label, so do not rule one out because it does not say BitLocker on it.
Gather every spare USB drive in the house before you start. Check drawers, bags, and the ports on this PC and on any other computer you own. Keep drives from around the time this PC was set up, even if they are unlabeled or you think they hold something else.
Use a working PC to check each drive, one at a time. Open the drive and look for a small text file with BitLocker in its name, or a name that matches the Key ID. Reading the file does not change it. Do not format, rename, or delete anything on the drive.
If a file holds the key, check that its Key ID matches the Key ID on the locked screen, then copy the 48-digit key from the file and type it on the locked PC. Afterward, put that drive in an envelope, label the envelope, and keep it somewhere you will find it again.
Check other family accounts, including old ones
BitLocker saves the key to the account of the person who signed in first when this PC was set up. That person may not be you. Think back to setup day and ask who was there, who handled the PC before you, and who helped get it running, even if they only touched it for a few minutes at the start. The key does not move to another account.
A spouse or partner is the first person to ask, then an adult child, a grandchild, or a friend who helped with computers. Add anyone who set up the PC for you, gave it to you, or passed it on when they bought a new one. If you bought the PC used, contact the seller too, because a former owner may still hold the only copy in their account.
Ask each person to sign in to their own Microsoft account, on their own phone or PC, and check their own list of recovery keys. Give them the Key ID from your locked screen to compare. A key from a different PC will look similar, so only a full match counts for this PC. Never ask anyone for their password, and do not try to sign in as them yourself.
Also ask about forgotten accounts. Many people have an old Hotmail or Outlook address they no longer use, or an account made just to finish setup and then never opened again. Ask each person to try those old addresses as well as the one they use now, and keep a note of each address checked. If they cannot sign in, point them to the Locked Out pages on this site.
Check a work, school, or shop account if this PC ever had one
Think back to how this PC was first used. This route fits if you ever signed in with a work or school email, if an employer or school gave you the PC, or if it was a work or class PC that later stayed at home. A local shop setting up the PC counts too, and that case is covered below.
A key saved under a work or school account never appears in your personal Microsoft account. Sign in with that work or school account at myaccount.microsoft.com, open Devices, select this PC, and look for View BitLocker keys. Compare the Key ID there with the Key ID on the locked screen, as with the other copies.
If that sign-in shows no key, or the account is closed, contact the IT help desk for that employer or school. Give them the Key ID from the locked screen, the PC name, and roughly when the PC was linked to the account. Give nothing more, and do not share your password.
If a shop or the PC maker set up the PC, call them next. Ask if they kept a setup printout or a saved file with the recovery key, and ask how long they keep those records, because some delete them after a set time. Have the Key ID and PC name ready so they can check the right record.
If no copy turns up, what the last resort really means
If no copy turns up, what the last resort really means
If no copy turns up anywhere, there is no hidden way to get a new key. Microsoft, the PC maker, and paid support cannot produce the 48-digit key or get past the locked drive for you. No download can do it either. Anyone who asks for payment to supply a code is not able to keep that promise. There is no spare copy held aside for this situation.
Before you take the next step, pause and work out what already exists somewhere else. Files in OneDrive, copies on an external drive, documents sent by email, and photos you have printed or shared will survive. Anything stored only on this PC will not, so check those places first and make a list. Ask family members too, in case they hold copies of shared files or photos.
The last resort is to reinstall Windows, or to use Reset this PC from the recovery screen. That gets the PC working again, but it erases the files, apps, and settings on the drive. Follow the steps on our Reset this PC page, and do not start until you accept that the data on this PC will be gone. There is no way to undo it once it starts.
If you get back in, or you start again on this PC or another one, save the new key in more than one place this time. Our page Save Your BitLocker Key Today sets out the print and file routine. A paper copy plus a copy in your account is much harder to lose than one copy alone. Keep them in different places, so a loss leaves one behind.
Conclusion
If you found a key with a matching Key ID, you can stop searching and use it. Write down where that copy was, so you know where to look first if this screen comes back.
If nothing matched, that result still tells you something clear. A copy saved at setup would have turned up in one of these places, and checking the same account again will not change the list you saw. You can decide what to do next based on that, not on hope that one more search will work.