Bitlocker account key

I cannot find a 48 digit recovery key.

Just to confirm, have you already checked this page? https://account.microsoft.com/devices/recoverykey

If you set up or used the device with a work or school account, you can also check here: https://aka.ms/aadrecoverykey

A few things to consider:

• If the device was purchased second-hand, gifted, or preconfigured (for example, by a store or organization), the BitLocker key might be stored under the original owner’s Microsoft account.
• If you set it up using a different Microsoft account in the past, try signing in with that account as well.
• During setup, you might have the key saved to a local file or printed copy, instead of the online account. It's worth checking your saved files or printouts.

About entering Bitlocker key, as I mentioned earlier:

• BitLocker recovery key is a 48-digit number and does not contain any letters. You only need to enter the numbers from the recovery key. The letters you may see are usually part of the Recovery Key ID, which is only used to identify the correct key.

Let me know what you find. Thanks :)

If I was given a 48 digit key with letters and numbers by Microsoft then where do I find the numbers only recovery key?

I cannot find a 48 digit recovery key.