Notice has been sent to anyone running a version of Duo Mobile older than version 4.55 on an iOS device. Please update via the Apple App Store prior to April 17, 2025.
You can see the notice from Duo below for more details.
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Hello,
From April 17 to April 24, 2025, Duo will be rolling out changes to the activation links for activating Duo Mobile to address an issue preventing some customers from activating. As a result, Duo Mobile will require version 4.55 or newer on iOS for newly enrolled or re-enrolled Duo Mobile users.
According to our records, you or your sub-accounts have users actively using versions of Duo Mobile older than 4.55. Be aware that future activations on iOS will require Duo Mobile version 4.55 or newer to use activation links. This change does not affect these users’ ability to authenticate, but they will need to update their Duo Mobile version if they ever need to re-activate. The change also does not affect Android users.
If your users are unable to upgrade to Duo Mobile version 4.55 or newer on iOS, they can still activate Duo Mobile by manually entering an activation code within Duo Mobile. |
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Added enhancements | In addition to allowing for these updated activation links and providing up-to-date security, newer versions of Duo Mobile have improved functionality, including the ability to scan the activation QR code with the native camera app instead of requiring users to launch Duo Mobile first before completing the scan. We recommend all users stay up to date with the latest Duo Mobile version. |
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Contact us | Managed Service Providers may contact their MSP PM for additional details, such as the list of affected sub-accounts. If you don't have your MSP PM's contact details, write to msp@duo.com — we will put you in touch.
All other customers may reply to this email with any questions. |
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Thank you for being a Cisco Duo customer!
Cisco Duo Technical Communications Team |
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| Cisco Systems, Inc. 170 West Tasman Dr. San Jose, CA 95134 |
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