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Last Updated: March 23, 2021
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If you received the error like: Authentication failure: Invalid username or password" after you've correctly entered in your NetID and password, you maybe locked out of Duo Security two-step login. This can happen with any system that requires two-step login.
Example of authentication failure:
Please call 2-9800 or submit a service ticket so that a Duo Administrator can unlock your account.
Also, ensure that the device in hand is listed as your default device in the Duo Self-Service Portal to prevent being locked out again
Be sure to keep your default device handy when you log into a protected system that requires 2-step login.