Multi-Factor Authentication

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Watch Out for Fraudulent Duo MFA Requests!

Multi-factor Authentication (MFA) adds a second layer of security to your SDSUid account. By verifying your identity using a second factor (such as your mobile device or a key fob), MFA prevents anyone else from logging into your account, even if they know your password. To help keep SDSU users and data safe, the campus utilizes Duo's MFA solution.

Updates

An unexpected MFA request is one you receive that was initiated by someone else trying to sign in as you. This could mean that your SDSUid username and password have been compromised. You should change your password immediately by going through the SDSUid Password change process.

Stay vigilant and only approve MFA requests you initiate yourself, knowingly and intentionally. 

Depending on the authentication method, if you suspect you are receiving a fraudulent MFA request, hang up, deny the request, or do not enter the provided passcode. Then, report the fraudulent attempt IMMEDIATELY to [email protected].

How do I sign up?

Duo has been enabled for all faculty, staff, and students to access Google G Suite, which includes Gmail, Google Drive, Google Calendar, and various other Google applications.

To avoid being locked out from your G Suite accounts, ENROLL NOW! See the step-by-step instructions provided in the "Getting Started" section below. Follow all steps below to complete the enrollment process.

Duo informational videos are also available. These informational videos also provide guidance on the steps to complete the enrollment process.

Users can also get technical support to help troubleshoot any Duo issues they may be experiencing.

Getting Started

 

MFA Frequently Asked Questions

User Support

For Faculty and Staff

  • Information Technology User Services (ITUS) Help Desk - Faculty and staff can get help from your department IT support staff or ITUS at 619-594-5261. ITUS will offer extended hours, and staffing, during the week of March 5th from 8 am to 5 pm.

  • Submit a Ticket - If you are having problems, please submit a ticket through SDSU ServiceNow.

  • Virtual FIT Center - Any faculty, staff, or student employee with a question or need of immediate assistance can visit the Virtual FIT Center at http://sdsu.zoom.us/my/sdsuits, M-Th, 8 am to 5 pm, and Friday 8 am to 4:30 pm. 

For Students

Troubleshooting

There are some common Duo MFA problems that seem to happen more frequently than any of us would like. We've put together this knowledge base to address the most common problems and some possible fixes. If your question is not listed below, please see the User Support section above for further information.

Most Popular Cases

Step-by-step instructions are provided here.

Since Duo Mobile is tied to a specific device's hardware security module (HSM), you will need to reactivate Duo Mobile on your device by logging into the Duo Portal.

For Duo MFA User Support, please visit the following:

For Faculty and Staff

  • Information Technology User Services (ITUS) Help Desk - Faculty and staff can get help from your department IT support staff or ITUS at 619-594-5261. ITUS will offer extended hours, and staffing, during the week of March 5th from 8 am to 5 pm.

  • Submit a Ticket - If you are having problems, please submit a ticket through SDSU ServiceNow.

  • Virtual FIT Center - Any faculty, staff, or student employee with a question or need of immediate assistance can visit the Virtual FIT Center at http://sdsu.zoom.us/my/sdsuits, M-Th, 8 am to 5 pm, and Friday 8 am to 4:30 pm. 

For Students

If you set up a backup device, you can use the secondary device to authenticate with.

If you generated Duo Bypass Codes, you can authenticate with bypass codes. Step-by-step instructions of generating Bypass Codes are provided here.

Otherwise, if you do not have a backup device and did not generate Duo Bypass Codes, please contact Help Desk. Help Desk administrators will be able to provide a one-time use code that you can use to authenticate your identity.

For Duo MFA User Support, please visit the following:

For Faculty and Staff

  • Information Technology User Services (ITUS) Help Desk - Faculty and staff can get help from your department IT support staff or ITUS at 619-594-5261. ITUS will offer extended hours, and staffing, during the week of March 5th from 8 am to 5 pm.

  • Submit a Ticket - If you are having problems, please submit a ticket through SDSU ServiceNow.

  • Virtual FIT Center - Any faculty, staff, or student employee with a question or need of immediate assistance can visit the Virtual FIT Center at http://sdsu.zoom.us/my/sdsuits, M-Th, 8 am to 5 pm, and Friday 8 am to 4:30 pm. 

For Students

If you set up a backup device, you can use the secondary device to authenticate with. It is highly recommended that you enroll multiple devices, making it less likely you are locked out of your account.  

Duo Bypass Codes can be used to access resource protected by Duo when your device is unavailable. You may also need to use Bypass codes if your device is lost, stolen or replaced. Bypass codes should be placed in a secure location. Step-by-step instructions of generating Bypass Codes are provided here.

Otherwise, if you do not have a backup device and did not generate Duo Bypass Codes, please contact Help Desk. Help Desk administrators will be able to provide a one-time use code that you can use to authenticate your identity.

For Duo MFA User Support, please visit the following:

For Faculty and Staff

  • Information Technology User Services (ITUS) Help Desk - Faculty and staff can get help from your department IT support staff or ITUS at 619-594-5261. ITUS will offer extended hours, and staffing, during the week of March 5th from 8 am to 5 pm.

  • Submit a Ticket - If you are having problems, please submit a ticket through SDSU ServiceNow.

  • Virtual FIT Center - Any faculty, staff, or student employee with a question or need of immediate assistance can visit the Virtual FIT Center at http://sdsu.zoom.us/my/sdsuits, M-Th, 8 am to 5 pm, and Friday 8 am to 4:30 pm. 

For Students

Step-by-step instructions are provided here.

Since Duo Mobile is tied to a specific device's hardware security module (HSM), you will need to reactivate Duo Mobile on your device by logging into the Duo Portal.

For Duo MFA User Support, please visit the following:

For Faculty and Staff

  • Information Technology User Services (ITUS) Help Desk - Faculty and staff can get help from your department IT support staff or ITUS at 619-594-5261. ITUS will offer extended hours, and staffing, during the week of March 5th from 8 am to 5 pm.

  • Submit a Ticket - If you are having problems, please submit a ticket through SDSU ServiceNow.

  • Virtual FIT Center - Any faculty, staff, or student employee with a question or need of immediate assistance can visit the Virtual FIT Center at http://sdsu.zoom.us/my/sdsuits, M-Th, 8 am to 5 pm, and Friday 8 am to 4:30 pm. 

For Students

Duo recommends upgrading to the most recent version of for your devices in order to ensure compatibility. More information on Duo-supported Android devices and iOS devices are provided at the respective links.

If your phone is unable to install the Duo Mobile app, there are authentication methods include using the "Call Me" or "Enter a Passcode" options.

Step-by-step guidance is provided here on how to set up your device without downloading the Duo Mobile app.

There are other ways to authenticate with Duo MFA that does not require use of the Duo Mobile app.

Other alternate devices to consider would be the following:

  • Landline. A telephone call to any landline phone will prompt approval or denial of the authentication attempt. A touch tone-enabled phone is eligible to be enrolled.
  • Physical Token. A small lightweight keyfob that can be attached to your keychain. Pressing the button on the keyfob will generate a passcode for you to use with MFA. 
  • Phone. If wish to register a phone, but are unable to install the Duo Moble app or if you prefer not using the Duo Mobile, other authentication methods include using the "Call Me" or "Enter a Passcode" options. Step-by-step guidance is provided here on how to set up your phone without downloading the Duo Mobile app.

Yes. Duo Security's services are used in more than 100 countries. List of countries supported by Duo.

Please note that some countries and regions outside of North America and Europe have relatively unreliable telephony infrastructure. This can lead to inconsistent phone callback and SMS authentication experiences. In these circumstances, it is recommended using alternative authentication mechanisms such as Duo Push, generating passcodes in Duo Mobile, phone callback, or hardware tokens. Another consideration to keep in mind with these countries and regions is the high cost of telephony delivery.

For more information on using international phone numbers with Duo, please visit Duo's site.

Additional Help

SIM cards with the same phone number.

If the Duo app is already installed on your phone and your new SIM card uses the same phone number, Duo will work as normal.

SIM cards with a different phone number.

If you have the Duo app on your phone and change to a SIM card with a different phone number:

  1. Push notifications in the app — Changing SIM cards should not have any effect.
  2. Text (or call) notifications – You will need to register the phone number corresponding to the new SIM card, and then select which number to use when logging in.

Yes. It is highly recommended that you enroll multiple devices, making it less likely you are locked out of your account. There are various other methods in which to receive an authentication code.

If you set up a backup device, you can use the secondary device to authenticate with.

If you have the Duo App, but no cell phone coverage, you will not be able to receive Push notifications on your cell phone. However, if you touch the SDSU logo in the Duo app, it will generate you a six-digit code users can enter for authentication.

Other options include generating a Duo Bypass Code. Step-by-step instructions of generating Bypass Codes are provided here.

If no other authentication method exists, please contact the Help Desk.

For Faculty and Staff

  • Information Technology User Services (ITUS) Help Desk - Faculty and staff can get help from your department IT support staff or ITUS at 619-594-5261. ITUS will offer extended hours, and staffing, during the week of March 5th from 8 am to 5 pm.

  • Submit a Ticket - If you are having problems, please submit a ticket through SDSU ServiceNow.

  • Virtual FIT Center - Any faculty, staff, or student employee with a question or need of immediate assistance can visit the Virtual FIT Center at http://sdsu.zoom.us/my/sdsuits, M-Th, 8 am to 5 pm, and Friday 8 am to 4:30 pm. 

For Students

Extra Resources