- Knowledge Base
- Accounts, Email & Support
- Duo
How to reactivate your phone for Duo.
- Knowledge Base
- Accounts, Email & Support
- Duo
How to add, remove, reactivate or deactivate Duo devices.
- Knowledge Base
- Accounts, Email & Support
- Duo
What to do with a former employee's Duo hardware token.
- Knowledge Base
- Accounts, Email & Support
- Duo
Using Duo with a mobile device is the recommended option.
- Knowledge Base
- Accounts, Email & Support
- Duo
Troubleshoot common Duo login issues.
- Knowledge Base
- Accounts, Email & Support
- Duo
How to use Duo with an offline cell phone.
- Knowledge Base
- Accounts, Email & Support
- Duo
What to do if you forgot your Duo device.