The technology giant made passwordless accounts available for business users of its products in March.
And that system is now being made available to all Microsoft or Windows users.
It said "nearly 100% of our employees" were already using the new, more secure system for their corporate accounts.
And this is far more secure than using passwords, which can be guessed or stolen, according to Microsoft.
"Only you can provide fingerprint authentication or provide the right response on your mobile at the right time," it said.