Here we have compiled a list of answers to the most common questions regarding Two Step Login. If you none of these help, or if you have additional questions, please contact the Help Desk at (610) 330-5501 or at

The Remember me for 30 days setting is not working

Firefox on macOS

The “Remember me for 30 days” feature uses third-party cookies and your browsing history to remember you.

In Firefox on a Mac, under Preferences/General, make sure that “Show your windows and tabs from last time” is not checked.

Under Privacy & Security/Browser Privacy/History do not check “Always use private browsing mode” and “Clear history when Firefox closes.” Under Cookies and Site Data, accept cookies and site data and keep until they expire. Accept third-party cookies and site data always.

Firefox on Windows

In Firefox on Windows, click on the three stacked horizontal lines on the upper right hand portion of the screen. Select Privacy & Security from the top left list. Under Tracking Protection, make sure under ‘Send websites a “Do Not Track” signal … ‘ to select “Only when using Tracking Protection.” 

Google Chrome

In Chrome, under Settings/Advanced/Privacy and security/Content settings/Cookies, the following settings. Make sure to turn off the option to “Keep local data only until you quit your browser.” 

Additional FAQs

I have the “Remember me for 30 days” setting checked. How can I add a new device or manage my settings?

If you have “Remember me for 30 days” checked, you need to open a new Private or Incognito window in your browser to get to the two-step login frame.

I need to access My Devices & Settings but I'm logged in automatically and never see the two-step login options

If you have set something other than the default “Ask me to choose an authentication method” set, you will need to open a new Private or Incognito window in your browser to get to the two-step login frame.

I updated the OS on my smart phone or bought a new phone and now I don’t get Push requests.

The Duo Mobile app must be reactivated after an OS update or getting a new phone. To reactivate Duo Mobile and receive Push requests again, follow the steps for Installing Duo Mobile.

I no longer receive phone calls for two-step login at my cell phone.

Incoming authentication requests for the Call Me method originate from (908) 258-6424 (Union, NJ). Make sure that the number for Duo is not on your blocked callers list.

I’d like to use a YubiKey/U2F key. Are there any in particular ITS recommends?

ITS recommends the Yubico Security Key. Some departments may wish to purchase them in packs directly from Yubico for a slight discount. They are also available from Amazon.

U2F keys work with the latest version of Chrome. Anyone with a brand new Apple MacBook Pro will need an USB-A adapter or YubiKey 4C. Linux users may need their systems set up for U2F depending on the type of key they use.

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