After entering your user credentials, the login page will tell you it's waiting for you to authenticate with the Authenticator app.
You'll receive a prompt on your mobile device ask you to sign into the Authenticator application.
Click on the notification on your device > Approve
IMPORTANT: If you receive this prompt but you have
not tried to sign into RDS in the last 5 minutes, please contact IT Support immediately.
After clicking on Approve you'll be signed into your RDS environment