My MS Account does not accept my Password - Password Compromised??

I have 2FA setup for my MS Account and then all of a sudden when I try to login to my MS Account using my Password it gives me this message below.
I have other ways to sign in like Windows Hello, and MS Auth app and Passkey, but I tried to login using my password but instead of using my MS Auth Verification codes, it just spits out this message.

My question is, is my password compromised or is this just a lockout measure to ensure security?
I ALWAYS had used 2FA whether its Windows Hello, a Passkey, or MS Auth app Verification codes.

Please retry with a different device or other authentication method to sign in. For more details, please see this link

Error 400 when signing in | Microsoft Support

Error 400 when signing in

support.microsoft.com

Seems it's not just me. I also told my Mom to check and test her MS Account to check email and she is getting the same error using her Android tablet. Using Chrome.

Can you log in by another method such as a PIN? I normally use a PIN but have a password as an alternative method.

BTW, I have a password manager but don't trust it fully. I occasionally exports its data and put that in a safe place.

Yes, the Windows Hello PIN works

I tried to login from my work to see if that would work and was able to login using my password and verification code.

And last night it seemed to work again using my other device from home

And now this morning I have the same issue.

So don't know what the issue is.

Does anyone know?

Now again I managed to login at work then came home and I can login again at home.

But somehow it's in the morning hours that seems to do this.