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Home > Help & Support > Knowledge Base > Security > 2FA Information > Append Mode with 2FA (VPN Use Only)

Append Mode with 2FA (VPN Use Only)

If you using multiple devices when providing your 2FA you can use Append Mode. Append mode allows you to specify what device you would like the authentication request to be sent to. If you have multiple devices of the same type registered, you can add a number to the end of the device names.

For example, push2 will send a login request to your second phone, phone3 will call your third phone, etc.

More information about this feature can be found in the Duo Guide.

If your Second Device is a... Enter... Duo Response
  • Smartphone with Duo Mobile app
User: Mason NetID

Password: Password,push2

Automatic push via Duo Mobile app on your second device
  • Smartphone without Duo Mobile app
  • Mobile Phone
  • Landline
User: Mason NetID

Password: Password,phone2

Automatic phone call on your second device

If you are unable to access any of your devices, you may request an Emergency Bypass Code that will be sent to the alternate email that you used during enrollment

Last modified: September 10, 2018

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Related articles

  • How to Use 2FA With Web Apps
  • How to Set Up & Enroll a Yubikey
  • How to Enroll in 2FA with a Smartphone
  • How to Request a Bypass Code (Emergency)
  • List of 2FA Authentication Options

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After October 14, 2025, Microsoft will no longer provide security updates or support for Windows 10 systems. As a result, all Windows 10 systems must be upgraded to Windows 11 or removed from the Mason network. Learn more ⬇️

https://its.gmu.edu/bulletins/microsoft-windows-11-announcement/

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