Open Dns outage history

We have identified an issue related to a third-party certificate that can cause SWG traffic disruptions in Cisco Umbrella and Cisco Secure Connect. We are assessing the scope of the impact and working toward a fix. We will provide further updates as more information becomes available.

Engineering is implementing and rolling out fixes to address the SWG traffic disruptions related to the third-party certificate issue. We are continuing to assess the impact and will provide further updates as the work progresses.

The third-party certificate issue affecting SWG traffic disruptions in Cisco Umbrella and Cisco Secure Connect has been resolved. All services are now operating normally. We apologize for any inconvenience caused and thank you for your patience. We’re Here to Help If you have any questions, please contact our support team. Thank you for your understanding as we improve your Cisco Secure Access experience.

We have identified an issue related to certificates issued by a third-party certificate vendor that affects SWG traffic. Customers with file inspection enabled are not expected to be affected; customers without it may continue to experience SWG traffic disruptions while we roll out a fix. We’re deploying the fix across the affected services and will provide further updates as the rollout progresses.

Cisco engineering continues to roll out and validate a remediation for the impact on SWG traffic caused by a third-party certificate issue across Cisco Umbrella and Cisco Secure Connect.

The issue affecting Secure Web Gateway traffic, caused by a third-party certificate issue, has been resolved as of 07:56 UTC on October 22, 2026. Cisco engineering has completed and validated the remediation across all affected services, and all services are operating as expected. We apologize for any inconvenience caused and thank you for your patience. We're Here to Help If you continue to experience issues, please contact our support team. Thank you for your understanding as we improve your Cisco Secure Connect and Cisco Umbrella experience.

Between 01:35 UTC and 02:05 UTC, some customers connecting through the Miami data center may have experienced intermittent connectivity or traffic disruption. The issue has been resolved, and all services are now operating normally. We apologize for any inconvenience caused and thank you for your patience. We’re Here to Help If you have any questions, please contact our support team. Thank you for your understanding as we improve your Cisco Umbrella experience.

This incident has been resolved.

We identified a service disruption affecting the Remote Access (Client) service at our Melbourne location (MEL1.EDC). Affected customers could establish a Remote Access VPN session but were unable to access the Internet or other resources through the VPN connection. The Melbourne location was temporarily taken out of rotation, and new connection requests were redirected to Sydney. Customer impact was mitigated while the issue was investigated. As of 14:31 UTC, the Melbourne location is active and back in rotation. New connection requests are being served from Melbourne again.

Connectivity through our Melbourne location in Australia is currently affected. We’re working to address the issue and will share updates as more information becomes available.

The Remote Access (Client) service at Melbourne data center (MEL1.EDC) has been taken out of rotation to address the traffic disruption.

The Melbourne data center (MEL1.EDC) has been returned to service. The Remote Access (Client) service is operating normally, and the traffic disruption has been resolved.We apologize for any inconvenience caused and thank you for your patience. We’re Here to Help If you have any questions or need assistance, please contact our support team.

We are investigating a control-plane issue affecting Spain (MAD1.edc) and Italy (MIL1.edc) data center. The affected locations are unable to reach a central service required to renew certificates and manage tunnel connections. Existing tunnels continue to operate while they remain stable and no configuration changes are needed. Attempts to establish new tunnels or modify existing tunnels can fail. Customer traffic is not currently impacted while existing tunnels and front ends remain stable. Our engineering team is actively working to confirm the impact, identify the root cause, and implement a resolution.Updates and additional details will be provided as new information becomes available.

Restoration is underway, and services are improving. We’ll continue monitoring and provide another update as needed.

The issue affecting services in MAD1.edc and MIL1.edc has been resolved. All services are now operating normally. We apologize for any inconvenience caused and thank you for your patience. We’re Here to Help If you have any questions, please contact our support team. Thank you for your understanding as we improve your Cisco Secure Access experience.

We are investigating an issue affecting Cisco Umbrella API services globally. Affected customers may experience API request failures. Our engineering teams are actively investigating the issue and working to restore normal service. Updates and additional details will be provided as new information becomes available.

The issue affecting Cisco Umbrella API services globally has been resolved. All services are now operating normally. We apologize for any inconvenience caused and thank you for your patience. We’re Here to Help If you have any questions, please contact our support team. Thank you for your understanding as we improve your Cisco Umbrella experience.

On October 10, some Cisco Umbrella customers using roaming clients may have experienced connection instability or an inability to access the Internet. The issue affected environments where domains required to validate the new certificates were blocked by customer network or Umbrella policies, preventing certificate validation from completing successfully. Affected customers could temporarily restore connectivity by allowing the required certificate-validation domains through their policies. The certificate migration was rolled back at 20:47 UTC, restoring normal service. This incident has been resolved. Thank you for your patience. If you continue to experience issues, please contact Cisco Support.

We are investigating elevated capacity utilization affecting Remote Access Client at the Europe (Paris) data center. To maintain service quality and reliability, this location has been temporarily removed from rotation for new connections. Customers may experience the following: Existing connections will remain active, and customers can continue using the service without interruption. New connection attempts will be automatically redirected to the nearest available data center configured for your organization. Customers connecting with a location-specific address may receive a certificate warning. We recommend using the automatic selection address for seamless connectivity. Our engineering team is actively monitoring capacity at this location throughout the day and is taking steps to minimize any further impact. Updates and additional details will be provided as new information becomes available. We sincerely appreciate your patience and understanding.

The Paris (CDG1) data center has been restored to service, and services are operating normally. We apologize for any inconvenience caused and thank you for your patience. We’re Here to Help If you have any questions or need assistance, please contact our support team.

Between approximately 02 Oct 2026 23:48 UTC and 03 Oct 2026 01:31 UTC, Customers using the dashboard may have experienced duplicate headers and some pages not loading. The issue has been resolved, and service has returned to normal.

Customers using Cisco Umbrella might be unable to access some Akamai-hosted domains due to DNSSEC validation failure.Our teams are investigating and working to restore access. We will provide updates as more information becomes available.

We have identified that the issue occurs with domains hosted on Akamai IPv6 name servers that return a DNS response that is larger than 1410 bytes. These responses are being truncated which causes a Servfail response from the Cisco resolvers. We are continuing to work with Akamai to resolve this issue, we have the following proposed workaround. Work Around You can bypass the impacted domains from Cisco DNS. This can be performed with the Domain Management configuration for managed devices (Virtual Appliances and Roaming Clients) and with conditional forwarding rules on local DNS servers externally forwarding to Cisco DNS.

We have implemented a partial workaround for the currently identified affected domains. Customers should begin seeing restored access to these domains. The underlying issue has not been fully resolved, and other Akamai-hosted domains may continue to return SERVFAIL responses. We are monitoring the effectiveness of this mitigation and continuing to work with Akamai toward a full resolution. Customers who continue to experience issues can use the previously provided workaround to bypass affected domains from Cisco DNS. Additional updates will be provided as new information becomes available.

The issue affecting access to some Akamai-hosted domains through Cisco Umbrella has been resolved. All services are now operating normally. We apologize for any inconvenience caused and thank you for your patience.

We are investigating an issue where Oracle-related domains (including oracle.com) are currently being blocked in Umbrella after a recent update to the Gen AI application category. This appears related to an updated "AI database" application definition that is affecting multiple Oracle domains under Gen AI app controls. We have reverted the recent change and are closely monitoring web and DNS traffic to confirm full restoration of access for affected customers.

Access to Oracle-related domains through the Secure Web Gateway (SWG) has been restored. DNS access to these domains continues to experience issues. We have identified the issue and are working to restore full DNS access.

Access to Oracle-related domains has been fully restored through both DNS and the Secure Web Gateway (SWG). We apologize for any inconvenience caused and thank you for your patience. We’re Here to Help If you have any questions or need assistance, please contact our support team.

Between approximately 11:25 and 14:50 UTC, customers using the Investigate dashboard and associated data retrieval APIs may have experienced 503 errors, unavailable graphs or data, and errors when retrieving logs or graph information. The issue has been resolved, and service has returned to normal.

Between approximately 14:15 and 15:40 UTC, customers using the Investigate dashboard and associated data retrieval APIs may have experienced 503 errors, unavailable graphs or data, and errors when retrieving logs or graph information. The issue has been resolved, and service has returned to normal.

We are investigating a network issue causing delays when creating or updating policies in Cisco Umbrella in Johannesburg, South Africa. Customers may experience longer than expected propagation times for recent policy changes. Existing policies remain active while new or updated policy changes may be delayed. Our engineering teams are working to restore normal policy update processing. We will provide another update as soon as more information is available.

We are continuing to investigate the issue. Existing policies remain active. However, new or updated policy changes may take longer than expected to apply.

We have identified the issue and are applying mitigation. Existing policies remain active while recent policy changes may still be delayed.

Mitigation is underway, and we are seeing improvement. We will continue monitoring progress and provide another update as needed.

The network issue affecting Cisco Umbrella policy update processing in Johannesburg, South Africa has been resolved. New and updated policy changes are now applying as expected. We’re Here to Help If you have any questions or need assistance, please contact our support team.

We are investigating a potential issue with DNS service affecting customers connecting globally. Some Domains may be incorrectly categorised as DNS Tunneling VPN. Our engineering team is actively working to confirm the impact, identify the root cause, and implement a resolution.Updates and additional details will be provided as new information becomes available.

The team is actively monitoring the environment to validate service stability. We will provide a update once the incident has been fully resolved.

The issue affecting incorrectly categorized DNS Tunneling VPN issue for some domains has been resolved. All services are now operating normally. We apologize for any inconvenience caused and thank you for your patience. We’re Here to Help If you have any questions, please contact our support team. Thank you for your understanding as we improve your Cisco Secure Access experience.

We are currently monitoring elevated capacity utilization at the Europe (France) data center. To maintain service quality, this location has been temporarily removed from rotation for new connections. Customers with existing connections will remain connected and can continue using the service without interruption. New connection attempts will be automatically redirected to the nearest available data center configured for your organization. Customers connecting using a location-specific address may receive a certificate warning. We recommend using the automatic selection address to ensure seamless connectivity. Our engineering team will continue to monitor capacity throughout the day and will provide further updates as more information becomes available. We sincerely appreciate your patience and understanding. We're Here to Help If you have any questions, please contact our support team. Thank you for your understanding as we improve your Cisco Secure Access experience.

The capacity condition affecting Europe (France) has been resolved. Cisco Secure Connect Remote Access client connections are operating normally. We’re Here to Help If you have any questions or need assistance, please contact our support team.

We have identified a connectivity issue affecting Cisco Secure Connect and Umbrella services in the Palo Alto data center. Customers whose traffic is routed through Palo Alto may be unable to establish new tunnels or pass traffic through existing tunnels. Cisco is actively implementing mitigation measures to restore service. We will provide further updates as more information becomes available.

We are continuing to work on a fix for this issue.

Cisco is actively working to mitigate the impact and restore traffic flow. We are continuing to investigate and will provide more information as it becomes available.

Cisco has taken the affected Palo Alto site out of rotation to mitigate impact for Cisco Secure Connect and Umbrella traffic. Customers whose traffic was routed through Palo Alto should be redirected to available sites. We are continuing to monitor traffic recovery while working with our infrastructure provider and will provide more information as it becomes available.

Recovery work is ongoing with our infrastructure provider to restore the affected connectivity path. We will share a restoration ETA as soon as one is available. We will provide further updates as more information becomes available.

We are continuing with the recovery work

The connectivity issue in the Palo Alto data center is now resolved. All services are restored and the site is back in rotation. We have confirmed that traffic flow is stable. Thank you for your patience.

We are currently investigating a connectivity issue originating from our infrastructure provider that may be affecting customers connecting through multiple data centers. Customers connecting through the following locations may experience intermittent connectivity issues or degraded traffic performance: Europe (Germany) Europe (Milan) Europe (Stockholm) India (West) India (South) Africa (South Africa) Our engineering team is actively working with our infrastructure provider to confirm the impact, identify the root cause, and implement a resolution. Updates and additional details will be provided as new information becomes available. We sincerely appreciate your patience and understanding. We're Here to Help If you have any questions, please contact our support team. Thank you for your understanding as we improve your Cisco Secure Access experience.

We are continuing to monitor connectivity for the affected sites while awaiting further updates from our infrastructure provider.

Cisco has taken the affected sites out of rotation: Frankfurt, Amsterdam, Mumbai, Chennai, Cape Town, Milan, and Stockholm. Customers attempting to connect through these sites will be automatically redirected to other available sites. Customers that only have the affected sites provisioned are encouraged to provision additional sites to maintain connectivity. We are continuing to monitor and will provide more information as it becomes available.

Amsterdam, Mumbai, Chennai, Cape Town, Milan, and Stockholm are back in rotation. No customer action is required.

We are still working with our infrastructure provider on the EU/Frankfurt site intermittent connectivity issue. Customers with reporting data stored in the EU/Frankfurt data storage location may be unable to retrieve reporting data older than 30 days at this time. We are continuing to monitor and will provide more information as it becomes available.

All services in Frankfurt and previously affected sites are now fully restored. Connectivity and reporting are back to normal. We sincerely appreciate your patience and understanding. We're Here to Help If you have any questions, please contact our support team. Thank you for your understanding as we improve your Cisco Secure Access experience.

We are currently investigating a potential network connectivity issue affecting customers connecting to the Europe (Germany) data center. Customers may have experienced intermittent service disruption, including brief connection interruptions or degraded traffic performance. Our engineering team is actively working to confirm the impact, identify the root cause, and implement a resolution. Updates and additional details will be provided as new information becomes available. Thank you for your patience and understanding. We're Here to Help If you have any questions, please contact our support team. Thank you for your understanding as we improve your Cisco Secure Access experience.

We are continuing to investigate a network connectivity issue affecting customers connecting to the Europe (Germany) data center. The specific impact for Secure Web Gateway (SWG) is delayed logging, but traffic is not impacted. Thank you for your patience and understanding.

As part of our mitigation efforts, we are redirecting traffic from the affected data center to restore normal service for impacted customers. During this activity, customers may experience a brief interruption to their session. If your connection does not restore automatically, we kindly ask that you reconnect manually using Cisco Secure Client to be routed to a healthy location. We sincerely appreciate your patience and understanding.

Traffic has been successfully redirected away from the affected data center, and all services have been stabilized as of 05:01 UTC. Customers should now experience normal service performance. If your connection has not restored automatically, we kindly ask that you reconnect manually using Cisco Secure Client to be routed to a healthy location. Reporting services may take a few hours to fully catch up. During this time, some log and report data may appear delayed. We sincerely appreciate your patience and understanding.