Windows 10: Recover account information associated to a windows key?

Hello, 6 months ago I bought a laptop for my girlfriend with Windows 11.Yesterday when she opened it, it asked for a BitLocker key which we never manually activated. We can't find the microsoft account associated with the laptop I'm sure we logged into a Microsoft account but I do have the Windows 11 Key.I wonder if it's possible for microsoft support or anything to recover the user details e-mail maybe? associated with the key so we can log in into microsoft and check the BitLocker key to unlock the laptop again.

:)

 

Remove account

I suggest you backup your personalized files first before removing the account.
To delete an account, follow these steps:

1. Press WIN + X keys and click Command Prompt (Admin) from the menu.
2. Type the following command and press Enter. Replace test with the name of your sister's account. Code:

 

Microsoft account purchase information.

Hi Robert,

A corrupted game file is one of the possible reasons why you don't see any information with all of your Microsoft games. To help you resolve this concern, we suggest that you follow the steps below:

Step 1: Sign out your account from the Windows Store. Here is how:

• Open the Store app.
• Click/tap on the user icon, and click/tap on Microsoft account that you are currently signed in to the Store with.
• Click/tap on the Microsoft account again.
• Click/tap on the Sign out link.

Step 2: Reset Store cache. Follow the steps below:

• Press the Win+R keys to open the Run dialog.
• Type WSReset.exe, and click/tap on OK.
  
  Note: The WS tool resets the Windows Store without changing account settings or deleting installed apps.
• The Store and a command prompt will now open without any message. The command prompt will automatically close when the Store cache has been reset.

Step 3: Sign in your account to the Windows Store.

• Open the Store app.
• Click/tap on the user icon, and click/tap on Sign in.

Should you need further assistance, feel free to post back anytime.

 

Multiple Keys associated with MS Account?

Against MS making it easier? Why on earth do you say that? I am absolutely all for simplifying this whole cumbersome, confusing process that doesn't seem to have changed much for many years now.
Not that it matters too much what I think, but I am suggesting the simplest form of activation, i.e. every key being linked to one install at any time for a particular user. Let's take the whole hardware thing out of the equation. That is how a lot of software licences work, i.e. activated for 1 install at a time.
I am still missing something crucial here. You say re-installing is simpler now, but that wasn't really ever an issue. Not for me at least. All that was required was to input a key, then there was a check against the hardware, and bingo, everything was fine.
My issue over the years, and in this thread, is about what happens with hardware changes and transferring to a new PC completely.
I was under the impression that life in this respect had been made easier with Anniversary by associating keys with MSAs rather than hardware, but throughout this thread, that opinion has proven to be wrong. Keys are still locked to hardware.
I am interested in your statement 'I can transfer a license from a device listed on my Microsoft Account'. That seems to suggest what I was thinking in the first place!
I'm afraid, despite all you guys' best efforts, I remain totally confused! Honestly not trying to be awkward here.