How to unlock Windows device from Microsoft account?

I have an Acer Nitro 5, Windows 10, the only account I have is my Microsoft account.

I know both my Microsoft and Windows password. I can still log in to Microsoft, but not to my Windows computer, because I just lost my computer, so I locked it online from my Microsoft account and displayed a message to the person who would find it to get it back to me.

Luckily someone returned it. But now when I try to turn on my computer and enter the right password, it says

You can't login to this account because an admin has locked it, turn on WiFi and ask admin to connect first.

Since in my Windows the only account I have is Microsoft account, I can't login to it anymore.

I tried to open other Windows from USB and make a CMD on the start menu, then I created an other account, but all of them are locked now.

Solution 1:

I know both my Microsoft and Windows password. I can still log in to Microsoft, but not to my Windows computer because I just lost my computer, so I locked it online from my Microsoft account and displayed a message to the person who would find it to get it back to me.

Since in my Windows the only account I have is a Microsoft account, I can't log in to it anymore.

1. Enable the built-in Administrator account
2. Run lusrmgr.msc:
   
3. View the properties of the user account you want to unlock
4. Unlock the account:
   
5. Be sure to disable the built-in Administrator account when you are done