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For Duo Users

Do you use Duo Mobile for work, school, or to protect your personal accounts, like Instagram or Facebook? Check out the resources below for information on setting up and using Duo.

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Self-Service Support

End-User Guide - Learn about enrollment, authentication prompts, adding devices, and more.

InfoSec Glossary - Learn common infosec terminology and clarify acronyms and other jargon.

Blog Articles - Learn more about how Duo works and what we're doing to secure your essential workflows.

Download Duo Mobile
Duo Mobile for Android
Duo Mobile for iOS

Are you a student, employee, or general user looking for more support?

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Work directly with your organization or university

If you can’t find an answer to your question in our self-service resources, please work directly with your organization to get assistance. Only the team responsible for implementing Duo is authorized to help you enroll, activate, re-activate, or troubleshoot Duo-related issues.

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Resources for Duo Administrators

Are you a Duo Administrator who manages Duo at your organization? Take a look at our collection of extensively-maintained self-service resources below.

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Get Started With Duo

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Getting Started Guide

Learn the basics

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Step-by-step instructions

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Deployment Guide

Prepare for launch

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Setup Videos

Follow along

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Product Demos

See Duo in action

Self-Service Support

Knowledge Base - Get answers to frequently asked questions.

Docs - Review our comprehensive product documentation.

Level Up Training - Get trained and certified as a Duo expert.

Help Desk Guide - Learn how to address common user concerns.

Community Forums - Connect with and learn from Duo administrators and security pros.

Can't find what you're looking for?

If you're a Duo Administrator:

We encourage you to reach out to us through any of the methods below. Our support team is with you every step of the way. If your country is not listed, please call the number closest to your region.

Initiate a case by clicking on the Support Panel in the sidebar of your admin dashboard.

Give a brief explanation of the issue you are facing and we will get back to you!

Use your regional support number as listed below to talk to a live agent.

Contact live support

United States

+1 (866) 760-4247

United Kingdom

+44 0800 3585 315


+61 (1300) 257 424


+32 08 002 67 84


+45 80 82 02 16


+33 0805 08 43 26


+49 0800 723 4790


+91 000 800 040 3672


+81 0800 170 5183


+31 0800 022 3681


+47 800 24 869


+65 800 32 11 183


+34 900 839 077


+62 00 180332160351


+63 1800 1320 0267


+866 0080 149 1148

Hong Kong

+852 800 938 751


+60 1800 812 899

Cisco Global Support

+1 800 553 2447 - Select option 3 and follow the options for Duo

When Can I Reach Duo Support?

If you have standard support:

  • 9am-5pm Monday-Friday for all issues

  • 24 hours, 7 days a week for critical severity issues

If you have premium Duo Care support:

  • 24 hours, 7 days a week, 365 days a year for all issues*

    *For the holidays listed below, one or more of our regional teams may be unavailable. On those dates, we offer 24x7x365 for Critical and High-Severity issues only

US 2024 Holidays:

December 25, 2023 - Christmas Day
December 26, 2023 - Cisco Designated Holiday
January 1, 2024 - New Year’s Day
January 15 - Martin Luther King Day
May 27 - Memorial Day
June 19 - Juneteenth
July 4 - Independence Day
September 2 - Labor Day
November 11 - Veteran's Day
November 28 - Thanksgiving Day
November 29 - Day after Thanksgiving Day
December 25 - Christmas Day
December 26 - Cisco Designated Holiday
January 1, 2025 - New Year’s Day

EMEA 2024 Holidays:

25 December, 2023 - Christmas Day
26 December, 2023 - Boxing Day
1 January, 2024 - New Year's Day
29 March - Good Friday
1 April - Easter Monday
6 May - Early May Bank Holiday
27 May - Spring bank holiday
4 July - Cisco Designated Holiday
26 August - Summer bank holiday
25 December - Christmas Day
26 December - Boxing Day
1 January 2025 - New Year's Day

APAC 2024 Holidays:

25 December, 2023 - Christmas Day
26 December, 2023 - Boxing Day
1 January, 2024 - New Year’s Day
26 January - Australia Day
29 March - Good Friday
30-31 March - Easter Weekend
1 April - Easter Monday
25 April - Anzac Day
10 June - King's Birthday
7 October - Labour Day
25 December - Christmas Day
26 December - Boxing Day
1 January, 2025 - New Year's Day

Japan 2024 National Holidays:

1 January, 2024 - New Year's Day
8 January - Coming of Age Day
11 February - Foundation Day         
12 February - Foundation Day (Observed)
23 February - Emperor's Day
20 March - Vernal Equinox Day
29 April - Showa Day
3 May - Constitution Day
4 May - Greenery Day
5 May - Children's Day          
6 May - Children's Day (Observed)
15 July - Marine Day
11 August - Mountain Day
12 August - Mountain Day (Observed)
16 September - Respect for The Aged Day
22 September - Autumnal Equinox
23 September - Autumnal Equinox (Observed)
14 October – Health & Sports Day
3 November - Culture Day
4 November - Culture Day (Observed)
23 November - Labour Thanksgiving Day
1 January, 2025 - New Year's Day

How Quickly Will Duo Get Back to Me?

Severity Initial Response Time Definition Business Impact What You Should Do


1 business hour

Critical impact on the customer’s business operations. Cisco’s hardware, software or as a service product is down.

High, outage prevents access to applications

Call Duo Support directly


2 business hours

Substantial impact on the customer’s business operation. Cisco hardware, software or as a service product is degraded.

High, users may be unable to access applications

Duo Care customers: call Duo Support directly
Other paying customers: Send us an email


4 business hours

Minimal impact on the customer’s business operations. Cisco hardware, software or as a service product is partially degraded.


Send us an email


1 business day

No impact on the customer’s business operations. The customer requests information about features, implementation, or configuration for Cisco’s hardware, software, or as a service product.


Send us an email

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