Resolved after 7 days 9 hours, affecting Core Platform, on September 11, 2026.
We sincerely apologize for any impact this incident has caused to you, your business, and your customers. At Okta, trust and transparency are our top priorities. Outlined below are the facts regarding this incident. We are committed to implementing improvements to the service to prevent future occurrences of this incident. Detection and Impact On September 11, 2026, at 5:09 AM PDT, Okta’s internal monitoring detected access issues for custom domains on Cell OK9. During this period, customers on OK9 using custom domains may have experienced intermittent connection timeouts, connection resets, and TLS handshake failures when attempting to access Okta. Standard Okta domains were not impacted. Root Cause Summary An automated, scheduled infrastructure update left the service running with reduced capacity, rendering it incapable of sustaining incoming connection volume. Because connection-based autoscaling was non-functional at the time, traffic surges could not trigger an automatic scale-out. As a result, the service reached its connection limit and could not establish new connections. Okta Engineering resolved the issue by manually expanding router capacity to process the traffic and fully restore operations. Remediation Steps Okta Engineering incident response teams identified the connection limit as the cause and scaled out router capacity to handle the additional load, restoring service at 5:36 AM PDT. Preventative Actions To mitigate future occurrences, Okta is actively implementing key preventive measures: updating and improving connection-based autoscaling, enhancing alerting to accelerate detection of connection bottlenecks. Trust Category: Service Degradation Total Duration: 36 minutes
Affected components
Update timeline
- investigating Sep 11, 2026, 12:10 PM UTC
At 11/09/2026 05:10 PT, Issues with Custom Domains in Cell OK9 - Customers with custom domains are currently experiencing issues in OK9. Engineering are currently investigating intermittent connectivity errors. Affected cells: okta.com:9
- monitoring Sep 11, 2026, 12:50 PM UTC
Engineering has identified the issue and taken remediation steps to mitigate the issue. Connectivity to Custom Domains has been restored and the service has returned to normal. Okta will continue to monitor.
- resolved Sep 11, 2026, 01:10 PM UTC
Okta has remediated the OK9 connectivity issues. Connectivity errors persisted from 5:00 AM PDT to 5:36 AM PDT. We will continue to monitor and produce an RCA in 5 business days.
- resolved Sep 18, 2026, 09:37 PM UTC
We sincerely apologize for any impact this incident has caused to you, your business, and your customers. At Okta, trust and transparency are our top priorities. Outlined below are the facts regarding this incident. We are committed to implementing improvements to the service to prevent future occurrences of this incident. Detection and Impact On September 11, 2026, at 5:09 AM PDT, Okta’s internal monitoring detected access issues for custom domains on Cell OK9. During this period, customers on OK9 using custom domains may have experienced intermittent connection timeouts, connection resets, and TLS handshake failures when attempting to access Okta. Standard Okta domains were not impacted. Root Cause Summary An automated, scheduled infrastructure update left the service running with reduced capacity, rendering it incapable of sustaining incoming connection volume. Because connection-based autoscaling was non-functional at the time, traffic surges could not trigger an automatic scale-out. As a result, the service reached its connection limit and could not establish new connections. Okta Engineering resolved the issue by manually expanding router capacity to process the traffic and fully restore operations. Remediation Steps Okta Engineering incident response teams identified the connection limit as the cause and scaled out router capacity to handle the additional load, restoring service at 5:36 AM PDT. Preventative Actions To mitigate future occurrences, Okta is actively implementing key preventive measures: updating and improving connection-based autoscaling, enhancing alerting to accelerate detection of connection bottlenecks. Trust Category: Service Degradation Total Duration: 36 minutes
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