Two-Factor FAQ

Find the answers to common 2FA questions.

2FA at NC State

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Set User Identification and Authorization (UIA)

Duo for Shibboleth

Google 2-Step

FAQ

2FA Training & Help

Setup

Am I required to turn on Two Factor Authentication?

I manage a Google Generic Account. Do I have to turn on Two-Step for that?

Can I use the same authenticator app with both two-factor services?

Do I have to enter a code every time I want to log in?

U2F USB Keys

What is a security key? Which U2F USB security keys work and where can I get one?

Are there limitations to U2F keys?

Who is responsible for purchasing U2F keys?

Can U2F keys be reused for different users?

Log-in Issues

I got a new phone and now I can’t use an authenticator app. What do I do?

I can’t use my usual second factor method for Google 2-step, so how do I use another method?

Why can’t I check “remember me” on the Duo authentication prompt?

I can’t authenticate with Google 2-Step in some apps. Can this be fixed with App Passwords?

What if I can’t log in?

How can I receive Duo codes via text message?

Why am I not receiving push notifications?

How do I turn off Duo Auto-Push?

Misc. Questions

Does Two-Factor cost money?

Two-Factor outside the USA

Do I have to use my personal phone to receive or generate codes?

I need more help. Is there training available?