Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi,
It works this way.
When signing in to the computer, a number is shown on the screen which is 2 digits.
You need to enter those two digits in the Microsoft Authenticator prompt to confirm the sign in aka Log in.
If you are using anything else rather than MS authenticator,
I think you might be seeing a one-time passcode. You need to enter the same after entering the password and the prompt should open.
Please share more details in order to help you better.