Ερευνούμε μια μερική διακοπή που επηρεάζει την ταυτοποίηση του υλικού Duo για τους πελάτες σε επηρεαζόμενες εφαρμογές των ΗΠΑ.
Οι πελάτες που χρησιμοποιούν μάρκες υλικού μπορεί να βιώσουν διαλείπουσες αποτυχίες ταυτοποίησης. Με βάση τις τρέχουσες πληροφορίες, η επανάληψη της προσπάθειας ταυτοποίησης αναμένεται να επιτύχει. Άλλες μέθοδοι ταυτοποίησης Duo δεν αναμένεται να επηρεαστούν και μπορούν να χρησιμοποιηθούν ως εναλλακτικές μέθοδοι εάν διαμορφωθούν και είναι διαθέσιμες.
Η ομάδα μας ερευνά ενεργά και έχει ξεκινήσει βήματα μετριασμού. Επικαιροποιήσεις και πρόσθετες λεπτομέρειες θα παρέχονται με τη στιγμή που νέες πληροφορίες θα είναι διαθέσιμες.
Εκτιμούμε την υπομονή και την κατανόησή σας κατά τη διάρκεια αυτής της περιόδου.
monitoring
Είδαμε το ποσοστό αποτυχίας του υλικού Duo να υποβαθμίζει την αυθεντικότητα των αμερικανικών εφαρμογών.
Οι πελάτες που χρησιμοποιούν μάρκες υλικού μπορεί ακόμα να βιώσουν διαλείπουσες αποτυχίες ταυτοποίησης ενώ εμείς συνεχίζουμε να παρακολουθούμε. Η επανάληψη της προσπάθειας πιστοποίησης αναμένεται να πετύχει. Άλλες μέθοδοι ταυτοποίησης Duo δεν αναμένεται να επηρεαστούν και μπορούν να χρησιμοποιηθούν ως εναλλακτικές μέθοδοι εάν διαμορφωθούν και είναι διαθέσιμες.
Θα συνεχίσουμε να παρακολουθούμε τη σταθερότητα των υπηρεσιών και να παρέχουμε πρόσθετες ενημερώσεις, ανάλογα με τις ανάγκες.
resolved
Το θέμα αυτό έχει επιλυθεί.
Duo hardware token ταυτοποίηση λειτουργεί τώρα κανονικά για τις πληγείσες ΗΠΑ ανάπτυξη. Άλλες μέθοδοι ταυτοποίησης Duo δεν αναμενόταν να επηρεαστούν.
Σας ευχαριστώ για την υπομονή σας. Εάν συνεχίσετε να αντιμετωπίζετε προβλήματα, παρακαλούμε επικοινωνήστε με την Υποστήριξη Duo.
Αυτόματη μετάφραση από την επίσημη ενημέρωση του συμβάντος.
Μη διαθέσιμες νέες εγγραφές
Έναρξη 10 Αυγούστου 2026 στις 8:34 μ.μ. UTC · 2h 12m
Pending
investigating
Ερευνούμε ένα θέμα που επηρεάζει την υπηρεσία εγγραφής. Οι εγγραφές νέων λογαριασμών δεν είναι προσωρινά διαθέσιμες.
Η ομάδα μας ερευνά ενεργά και εργάζεται για την αποκατάσταση της κανονικής υπηρεσίας. Ζητάμε συγγνώμη για την ταλαιπωρία και εκτιμούμε την υπομονή σας.
identified
We have identified the issue affecting new account registrations. Our team is working on a fix and expects to release it soon.
We apologize for any inconvenience and appreciate your continued patience.
resolved
This incident has been resolved.
New Duo account registrations are now functioning normally.
Thank you for your patience. If you continue to experience issues, please contact Duo Support.
Αυτόματη μετάφραση από την επίσημη ενημέρωση του συμβάντος.
Duo Phone Call Authentication Failures - United States
Έναρξη 8 Αυγούστου 2026 στις 9:13 μ.μ. UTC · 2h 54m
We have identified an issue causing phone call authentication failures for customers in the United States. This is related to a third-party carrier disruption. We are actively monitoring the carrier issue and working with our provider as needed.
Please check back here or subscribe to updates for any changes.
monitoring
We are seeing recovery for the issue related to a third-party carrier disruption that caused phone call authentication failures for customers in the United States.
We are actively monitoring phone call authentication delivery and will provide another update once the issue is fully resolved.
resolved
Phone call authentication delivery for customers in the United States has returned to normal operation.
If customers continue to experience issues, please contact Duo Support.
VoIP και SMS Delivery Israel
Έναρξη 23 Ιουλίου 2026 στις 6:02 μ.μ. UTC · 4d 2h
IssuesΜικρό περιστατικό
investigating
Ερευνούμε ένα θέμα που επηρεάζει την παράδοση μηνυμάτων VoIP και SMS για τους χρήστες στο Ισραήλ. Το θέμα σχετίζεται με έναν ανάντη μεταφορέα.
Η ομάδα μας συνεργάζεται με τους παρόχους μας για να διερευνήσει και να αποκαταστήσει την κανονική υπηρεσία. Όπου είναι διαθέσιμο, οι χρήστες μπορούν να χρησιμοποιούν εναλλακτικές μεθόδους ταυτοποίησης, όπως το Duo Push.
Θα παρέχουμε ενημερώσεις καθώς θα γίνονται διαθέσιμες περισσότερες πληροφορίες.
monitoring
Έχουμε εφαρμόσει μια αλλαγή για να αντιμετωπίσουμε το θέμα παράδοσης SMS και VoIP που επηρεάζει τους χρήστες στο Ισραήλ. SMS και VoIP παράδοση έχουν ανακάμψει, και παρακολουθούμε για να επιβεβαιώσουμε τη συνεχή σταθερότητα.
monitoring
Τα ποσοστά σφάλματος για την αποστολή SMS και VoIP στο Ισραήλ έχουν μειωθεί μετά την εφαρμοζόμενη αλλαγή. Συνεχίζουμε να παρακολουθούμε τη συμπεριφορά των υπηρεσιών και να διερευνούμε αναφορές διακοπτόμενων αποτυχιών που επηρεάζουν ορισμένους πελάτες.
Θα παρέχουμε μια άλλη ενημέρωση, καθώς θα γίνονται διαθέσιμες περισσότερες πληροφορίες.
resolved
Το θέμα παράδοσης SMS και VoIP που αφορά τους χρήστες στο Ισραήλ έχει επιλυθεί. Εάν οι πελάτες συνεχίσουν να αντιμετωπίζουν προβλήματα, παρακαλούμε επικοινωνήστε με την Υποστήριξη Duo.
Αυτόματη μετάφραση από την επίσημη ενημέρωση του συμβάντος.
Duo - Phone call and SMS authentication issues - Australia
Έναρξη 7 Ιουλίου 2026 στις 11:15 μ.μ. UTC · 15h 46m
IssuesΜικρό περιστατικό
Επηρεαζόμενα στοιχεία
SMS Message DeliveryPhone Call Delivery
investigating
We are investigating a third-party carrier issue affecting VoIP and SMS services in the Australia region.
Customers in Australia may experience delays or failures when using phone call or SMS authentication.
Other Duo authentication methods, such as Push Delivery, are not expected to be impacted and can be used as an alternate method of authentication if available.
Our team is monitoring the carrier issue and working with the provider as needed. Updates and additional details will be provided as new information becomes available.
We appreciate your patience and understanding during this time.
monitoring
The third-party carrier has indicated that the issue affecting VoIP and SMS services in the Australia region has been resolved.
Customers in Australia should see improved delivery for phone call and SMS authentication. Other Duo authentication methods, such as Push Delivery, remain available as alternate authentication methods if configured.
We are continuing to monitor service stability and will provide additional updates when the incident is fully resolved.
resolved
The third-party carrier issue affecting VoIP and SMS services in the Australia region has been resolved.
Phone call and SMS authentication services are operating normally. We appreciate your patience and understanding while we addressed this issue.
UAE Telephony SMS issue
Έναρξη 23 Ιουνίου 2026 στις 3:58 π.μ. UTC · 10h 23m
IssuesΜικρό περιστατικό
Επηρεαζόμενα στοιχεία
SMS Message Delivery
identified
We have identified the issue related to SMS for UAE region and are working to resolve it.
Users have the option to use alternative auth methods, like Duo Push or VoIP.
Please check back here or subscribe to updates for any changes.
monitoring
We have mitigated the SMS delivery issue affecting the UAE region. We are actively monitoring the situation and will provide a final update once the issue is fully resolved.
resolved
The SMS delivery issue affecting the UAE region has been resolved.
Our team has verified that SMS services are operating normally and full functionality has been restored. Thank you for your patience while we resolved this issue
AI Assistant Service Disruption in US-W1
Έναρξη 10 Ιουνίου 2026 στις 2:17 μ.μ. UTC · 1h 18m
We are currently investigating an issue affecting AI Assistant functionality in the US-W1 (US West-1) region. Users may experience errors or be unable to access AI Assistant features.
Our engineering teams are actively investigating the issue and working to restore normal service as quickly as possible.
Please check back here or subscribe to updates for the latest information.
resolved
The issue affecting AI Assistant functionality in the US-W1 region has been resolved.
Our team has verified that services are operating normally, and monitoring has confirmed system stability. Thank you for your patience while we resolved this issue.
We are currently investigating an issue with AI Assistant not functioning on all US deployments and are working to correct the issue as soon as possible.
Please check back here or subscribe to updates for any changes.
monitoring
We have implemented mitigation measures and are observing improved AI Assistant performance. We are continuing to monitor success rates and overall service stability.
resolved
The issue affecting AI Assistant functionality across all US deployments has been resolved, and full functionality has been restored. We will continue to monitor service performance to ensure stability.
Authentication failures
Έναρξη 13 Μαΐου 2026 στις 1:22 μ.μ. UTC · 2h 41m
IssuesΜικρό περιστατικό
Επηρεαζόμενα στοιχεία
Core Authentication Service
investigating
We are currently investigating an issue causing limited authentication failures on DUO57 and are working to correct the issue as soon as possible.
identified
We have identified the cause of the issue causing authentication failures on DUO57 with the Duo Core Authentication Service and are actively working to restore service.
monitoring
We have implemented a fix for the issue causing authentication failures on DUO57 with the Duo Core Authentication Service.
We will continue to monitor system performance and authentication success rates and will provide further updates once the incident is fully resolved.
resolved
The issue causing authentication failures on DUO57 with the Duo Core Authentication Service is now resolved and full functionality has been restored.
AI Assistant First-Time Access Failures for EU Administrators
Έναρξη 7 Μαΐου 2026 στις 2:17 μ.μ. UTC · 8h 23m
IssuesΜικρό περιστατικό
Επηρεαζόμενα στοιχεία
AI AssistantAI AssistantAI AssistantAI AssistantAI AssistantAI Assistant
investigating
We are investigating an issue causing failures when administrators located in the EU attempt to access the AI Assistant for the first time. Any administrators who have used the Assistant before should still be able to at this time
identified
We’ve identified a problem impacting first-time access to the AI Assistant for administrators in the EU and are actively working to restore normal access. We’ll continue to share updates as progress is made.
resolved
The issue affecting first-time access to the AI Assistant for administrators in the EU has been fully resolved, and normal functionality has been restored.
We are currently addressing an issue impacting desktop authenticator enrollments .A subset of customers may experience intermittent delays or failures during desktop authenticator enrollment. Mitigation actions are in progress and are helping to reduce impact. Core authentication, SSO, and delivery services remain fully operational.
monitoring
Mitigation actions have been implemented. The service has stabilized and recovery is underway. We will continue to monitor to ensure full resolution.
resolved
The issue has been resolved. Services have returned to normal operation, and customers should no longer experience delays or failures.
We apologize for any inconvenience caused and thank you for your patience.
Elevated Authentication Latency in DUO6
Έναρξη 28 Απριλίου 2026 στις 2:22 μ.μ. UTC · 1h 3m
OutageΣοβαρό περιστατικό
Επηρεαζόμενα στοιχεία
Core Authentication Service
investigating
We are investigating elevated authentication latency affecting customers . Authentication requests are continuing to succeed at this time, but customers may experience slower-than-normal response times and degraded performance during login attempts. Our team is actively working to identify the cause and restore normal performance as quickly as possible.
monitoring
We have applied mitigation steps and are seeing improved authentication performance for customers in the deployment. Authentication latency has decreased, and the service is recovering. Our team is continuing to monitor the environment closely to ensure stability while we investigate the underlying cause.
resolved
The issue causing elevated authentication latency has been fully resolved. Authentication performance has returned to normal levels, and customers should no longer experience delays during login attempts.
SMS Delivery Failures
Έναρξη 18 Απριλίου 2026 στις 4:30 π.μ. UTC · 2h 40m
We are currently detecting an issue with carriers in the US region for SMS delivery. We are currently working with providers to restore the service. In the meantime, please use other means of authentication such as Duo Push.
investigating
We are continuing to investigate the SMS delivery issue impacting all customers in the US region. Push notifications will continue to work as expected. Further updates will be provided as more information becomes available.
resolved
The SMS delivery issue impacting customers in the US region has been resolved. SMS passcode authentication is now functioning normally.
We apologize for any inconvenience caused and thank you for your patience.
Duo Phone Call Authentication Failure for US Based Carriers
Έναρξη 22 Μαρτίου 2026 στις 10:13 μ.μ. UTC · 4h 10m
Pending
investigating
We are currently observing a recurrence of the issue causing VOIP authentication failures in all deployments in the US region. We are working to correct the issue as soon as possible. While we work to resolve this, please use alternative authentication methods such as Duo Mobile Push, SMS passcodes etc.
A full list of available authentication methods can be found here:
https://duo.com/docs/policy#authentication-methods
monitoring
We are now observing high rates of success of VoIP authentication. The issue appears to be resolved but we will continue to monitor the situation.
resolved
VoIP authentication has returned to normal operation with sustained success rates observed.
Duo Phone Call Authentication Failure for US Based Carriers
Έναρξη 22 Μαρτίου 2026 στις 5:18 μ.μ. UTC · 3h 15m
Pending
investigating
We are currently investigating an issue causing VOIP authentication failures in all the deployments in the US region and are working to correct the issue as soon as possible. At this time please use alternative authentication methods such as Duo Mobile Push, or SMS passcodes.
A list of all other alternative authentication methods can be found here:
https://duo.com/docs/policy#authentication-methods
Please check back here or subscribe to updates for any changes.
investigating
We are observing a recovery in voice call processing across the U.S. and are continuing to investigate the root cause of this impact.
monitoring
We are now observing high rates of success of VoIP authentication. We will continue to monitor the situation.
resolved
VoIP authentication has returned to normal operation with sustained success rates observed.
We are currently investigating a service degradation on our DUO81 deployment and are working to restore services as soon as possible.
investigating
We are continuing to investigate this issue.
identified
We have isolated the issue to a regional outage and are working with our partners to alleviate the degraded performance.
identified
We are continuing to work on a fix for this issue.
identified
Our cloud provider is responding to a power outage at a primary data center that continues to cause elevated error rates and connectivity issues across the region. While early signs of recovery were observed, the provider has since confirmed the impact is ongoing. Full restoration and environment stability are expected to take several hours.
We will provide our next update within 6 hours.
identified
We remain in active coordination with our cloud service provider as they work to resolve a power outage affecting a primary data center. Connectivity issues and elevated error rates across the region will persist until power has been fully restored. The provider has indicated that full restoration and environment stabilization may take a day or more.
identified
As previously communicated, a major power and connectivity outage at a third-party data center in the UAE operated by a third-party vendor has impacted Cisco Duo functionality in the region. Our engineering teams have worked continuously to implement local mitigations, but the persistent instability of the regional infrastructure has required more comprehensive measures to ensure business continuity.
To fully resolve these issues and restore service stability, Cisco Duo has officially initiated its Disaster Recovery (DR) process. This involves transitioning critical service dependencies and user data away from the affected UAE region to secure, high-availability data centers.
resolved
The service outage affecting DUO81 has been resolved.
All impacted customers have been successfully migrated to an alternative Duo deployment.
This migration has restored full service functionality for all affected users.
We are currently investigating an issue where 504 Gateway timeouts are present when accessing Entra when Duo is called for MFA. We are working to resolve as quickly as possible.
investigating
We are continuing to investigate an issue where 504 Gateway timeouts are present when accessing Entra when Duo is called for MFA. We are working with our respective partners to resolve as quickly as possible.
monitoring
We have deployed a fix for the gateway timeouts and are now seeing successful authentications. We are currently monitoring for any further issues.
resolved
The issue causing 504 gateway timeouts during Microsoft Entra logins when Duo MFA was called has been fully resolved. Authentication services are operating normally at this time.
We will share a root cause analysis once it becomes available.
postmortem
# Summary
On February 23, 2026, US-based users utilizing the Duo integration with Azure Identity management experienced increased authentication failures and timeouts. These errors were occurring specifically when accessing applications using Microsoft Entra and Duo as the MFA provider. Duo engineering was alerted to the issues via monitoring at 9:15 AM and promptly began investigating various factors that could have caused this error to occur, including checking the health of the different third-party services involved. Finally, the root cause was identified to be increased CPU usage resulting from a code change that added additional validation for security operations.
The incident was remediated by scaling the backend services that support this integration.
During the incident, updates were posted to the status page as new information became available. At the beginning of the incident, the impact of the issue was underestimated, and thus notifications were not set to go out along with these status updates. When the impact assessment changed, notifications should have been set to go out, but this was missed. Processes have been improved to help prevent this from happening in the future.
# Timeline of Events
| **Time \(in EST\) 2/23/2026** | **Event** |
| --- | --- |
| 9:15 am | Engineering begins investigating AzureAuth errors |
| 9:27 am | Duo begins receiving reports of 504 gateway timeout errors for customers accessing applications using Microsoft Entra and Duo. |
| 10:02 am | First status page from Duo is put up regarding investigating the root cause. This status page is posted without notifications due to assumed scale of incident. |
| 11:10 am | Duo scales resources for the Azureauth US deployment. |
| 11:19 am | Errors begin to subside. |
| 11:24 am | The incident is moved to monitoring. |
| 11:30 am | The incident is resolved. |
# Root Cause\(s\)
The Duo team follows a regular and disciplined release process across all services. Changes are routinely deployed to improve functionality, security posture, and overall reliability.
All releases undergo comprehensive validation, including:
* Unit testing
* Integration testing
* Frontend testing
* Performance testing
This layered testing strategy is designed to identify functional defects, regressions, and performance impacts prior to production deployment.
In the days leading up to the incident, a software update was deployed to the backend service that supports the Duo integration with Azure Identity management. This update was part of a broader security improvement effort. The change successfully passed all standard validation processes and was not expected to introduce downtime or performance degradation.
During the Monday morning traffic peak, this backend service experienced elevated CPU utilization, resulting in service degradation. The following points all contributed to the service interruption:
* **Increased CPU Utilization Per Request**
* The deployed change approximately doubled CPU consumption per request within this service.
* This materially increased overall compute demand during peak traffic.
* **Performance Test Coverage Gaps**
* Existing performance tests did not identify the increased CPU usage introduced by the change.
* The specific workload characteristics that amplified CPU consumption under peak conditions were not fully represented in pre-production testing.
* **Monitoring Gaps**
* A recent migration of our monitoring services missed CPU monitors for this service, leading to an alerting gap when CPU consumption started trending upward.
* Alerts were triggered only after peak load conditions were reached.
# Remediation and Future Work
To address all the causes for the incident, Duo is committed to doing the following:
* **Addressing increased CPU Utilization per Request**
* **This backend service has been scaled up \(Completed\)**
* Additional resources have been added to the infrastructure powering this backend service to provide additional compute headroom.
* This ensures sufficient capacity to absorb higher per-request of CPU costs.
* **Connection Efficiency Improvements \(In Progress\)**
* Investigate using persistent connection pooling, and/or caching mechanism to reduce connection overhead and lower per-request for CPU consumption.
* **Graceful Degradation Enhancements \(In Progress\)**
* Improvements being explored to ensure systems degrade gracefully under high CPU load, with the goal of protecting critical authentication flows and reducing user impact during resource saturation events.
* **Addressing Performance Testing Coverage Gaps**
* **Expanded Performance Test Coverage \(In Progress\)**
* Performance testing will be updated to explicitly model this failure scenario.
* Peak-load and stress conditions will be more accurately simulated.
* **Performance-Based Release Gates \(In Progress\)**
* Performance tests will become release-gating criteria.
* Changes that materially impact resource consumption will be identified before production deployment.
* **Addressing Monitoring Gaps**
* **Capacity Monitoring Enhancement \(Completed\)**
* Missing capacity monitors \(inadvertently omitted during a recent migration\) have been restored.
* Monitoring coverage for this service has been expanded.
* **Comprehensive Monitoring Audit \(Completed\)**
* Full audit of all capacity monitors underway to ensure complete monitoring coverage and eliminate similar gaps across services.
* **Customer Communication Improvements**
* **Improved Status Page Notifications**
* Status page processes have been updated to ensure faster and clearer communication.
* Commitment to timely, transparent, and regular updates to all customers during future incidents, with notifications.
[US Deployments]: Duo Phone Call Authentication Failures for US Region
Έναρξη 23 Φεβρουαρίου 2026 στις 2:02 μ.μ. UTC · 4h 18m
We are currently investigating an issue causing an abnormal phone call authentication success rate for the US region.
Please check back here or subscribe to updates for any changes.
monitoring
The issue causing an abnormal phone call authentication success rate is tied to a third-party carrier. We are monitoring the third-party's communications at this time and can confirm that Duo telephony services are functioning as expected at this time.
resolved
The issue causing an abnormal phone call authentication success rate has been resolved by the third-party carrier.
[Multiple Deployments] AI Assistant not available in India
Έναρξη 19 Φεβρουαρίου 2026 στις 2:46 μ.μ. UTC · 3h 15m
We are investigating an issue causing the AI Assistant to be unavailable for administrators in India.
Please check back here or subscribe to updates for any changes.
monitoring
We have deployed a fix for the issue causing the AI Assistant to be unavailable for administrators in India and are monitoring the results of the fix at this time.
resolved
The issue causing the AI Assistant to be unavailable for administrators in India has been resolved.