Answered By: Services *Research & Liaison
Last Updated: Jan 21, 2022     Views: 61

EZproxy now uses two factor authentication through Duo for the Libraries' e-resources, so you need to check your phone. However, our Duo integration is a bit different from your email or other campus systems, so you won't see the campus Single Sign On screen when you log in. If you haven't set up the Duo application and you are using Duo's call feature, you may need to check your Duo settings to ensure the correct phone number is set up as the first number on your account. Our Duo integration will not ring multiple numbers. You can check your Duo settings by going to and clicking on the "manage enrollment" button. If you're still having trouble, here are some other steps to try.

  • Try checking your caps lock   
  • Type your credentials in again (often we see users simply mistype credentials) 
  • Try clearing the cache of your web browser  
  • Check the 2FA help site: 
  • If these methods do not work:
    • staff and faculty consult the IT Help Desk at (314) 933-3333
    • students consult the Tech Den at (314) 935-7100

Duo Authentication for Libraries Resources


Submit a question

Our goal is to respond within a day, but it could take longer during weekends and during our reduced service hours because of COVID-19.  Please check our library website for more information.  Or, see if we are on chat. If your question requires extensive research, consider contacting your subject librarian. Thanks!

Your Question
Your Info
Fields marked with * are required.

Ask Us! 24/7 Chat with a Librarian

Contact us

If you would like to email a question to us, please use the form on this page.  Thanks!