Duo is a tool that provides multi-factor authentication (MFA) to better protect your account by requiring additional information beyond your username and password. When you access certain CSU System services—including Microsoft 365 applications (OneDrive, Teams, etc.), university email accounts, CSU’s GlobalProtect VPN, HR, and Banner—you will be required to use a mobile phone, security key or hardware token to verify your identity. This provides an additional layer of security for your account. 

How do I get started?

To use Duo, you must attach a mobile phone, security key or hardware token to your account on the NetID website. It is recommended to attach multiple devices in case your primary device is inaccessible. Use the following articles to learn how to attach a device to your Duo account:

• How do I register and activate the Duo Mobile app?
• How do I register a security key for Duo?
• How do I register a hardware token for Duo?

Once you have successfully registered at least one device, you can test your account by logging out of and back into the NetID website. For instructions on how to use Duo to log in, see How do I authenticate with Duo?.

Support

If you require assistance with Duo, please submit a help request.