Hello Bryce Letts
It sounds like you cannot access Windows because the sign-in screen reports that the credentials are incorrect or unavailable. To better understand the issue, could you confirm:
- Are you entering a PIN or password?
- Can you sign in to the same account through a browser?
- Did this begin after changing your password, updating, or resetting Windows?
Meanwhile, select Sign-in options and try your password instead of the PIN. If necessary, use I forgot my PIN or I forgot my password. You can also restart the device and check its internet connection from the lock screen.
Please keep me updated, and we’ll look into the issue further.