Authentication system and method for windows systems

A process of remotely accessing a first device, comprising:

• modifying the first device to display a one-time code using a credential provider associated with an authentication server that can authenticate a user or other device to the first device, wherein the modification to use the credential provider to display the one-time code is by modification of one or more registry keys of a Microsoft Windows operating system of the first device;
• connecting the first device to the authentication server;
• generating, with the credential provider, the one-time code that is displayed as a QR code on a login screen of a third device as an image of a login screen of the first device, wherein the first device is being remotely accessed from the third device;
• accepting the one-time code at a second device using an application stored on the second device configured to accept a code;
• transmitting the one-time code from the second device to the authentication server by the second device, the second device being able to read and process the information contained in the QR code;
• receiving and verifying the one-time code with the authentication server from the second device and verifying the authentication of the user of the second device;
• transmitting approval for authentication of the user by the authentication server to the first device;
• and
• upon receiving the approval for authentication, signing the user into the first device.