How to Unlock a Device Locked Using Find my Device in the Microsoft Account

No, I was never able to unlock. I had to reinstall windows. I spend a week on the phone with tech support with both windows and my laptop manufacturer to no avail.

I want to say thank you I followed your advice the same thing happened to me with my windows 11 laptop and it worked great following your advice it was so easy appreciate it

EDIT: More context, my device was still locked after a reset. Solution below allows your data to be preserved, and should be the first thing tried before resetting the computer.

Couldn't find a solution anywhere for this myself. Since this is the latest thread on the topic I will post the solution that worked for me here.

1. Restart device while holding shift to enter Windows Recovery Environment. Troubleshooting > Advanced Options > Open CMD. This is where you will need your recovery key.
2. After CMD is open, type "regedit" and hit enter.
3. Click "HKEY_LOCAL_MACHINE", then "File" in top left corner, then "Load Hive".
4. A file explorer should appear. It should be "System32" as the folder already. If not, follow: This PC > (C:) Drive > Windows > System32
5. Navigate to "Config" > "Software". Pop up box named "Keyname" should appear. Enter '1234' as keyname. Box will close after complete.
6. Expand "HKEY_LOCAL_MACHINE" > expand folder "1234" > Microsoft > WindowsNT > CurrentVersion > PasswordLess > Device.
7. Double click "DevicePasswordBuildVersion" from window beside file directory. Change value data from '2' to '0'.
8. Restart computer by exiting the Recovery Environment.
9. Should now have access to "Sign-In Options" on the sign in page. Choose "Sign-In with Microsoft Account" and use your account details.
10. Everything should be back to normal, you will have to create a PIN again if you so choose, following the usual steps in settings.

Pretty ridiculous to have this option available without clearly informing the user of the ramifications, and the inability to unlock your device once found.

Hi, I am Dave, I will help you with this.

When you use the Lock option to remotely lock your device on the 'Find my Device' web page, the only option to get back into Windows is to reset Windows, you will not be able to log into the PC normally, usually you will see a notification that an Administrator needs to unlock the device, even though you are the administrator.

Click the power button on the Login screen.
Press the Shift Key and click Restart
Your PC will boot into the Windows Recovery Environment
Go to Troubleshoot - Advanced Options - Reset this PC
Choose to keep your files and apps.
Then start the Reset

Lovely advice, reset the PC, still the same issue, so wrong advice for my circumstances

Stephen, I have the proper solution in the reply above. I also reset the PC using Dave's advice and was left with the same issue. I should have prefaced my solution with these details, as it allows the all of your data and settings to be preserved.