F5 incident
F5 Distributed Cloud - Service Degradation - DNS resolution issue - INC-20260918-516
F5 experienced a minor incident on September 18, 2026 affecting DNS, lasting 3h 28m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Sep 18, 2026, 08:09 AM UTC
This advisory is to inform you that we are currently investigating reports of service degradation affecting DNS requests. We understand this may be affecting your operations and we are committed to providing transparent and timely updates as more information becomes available. While we gather more information, we recommend monitoring the progress on this site (https://www.f5cloudstatus.com/) for the latest update. Investigation Status: • We have identified potential service impact at 08:05 AM UTC; • Our incident response team has been fully mobilized; • Initial investigation and impact assessment efforts are underway. Next Steps: • A detailed incident notification will be provided within 30 minutes; • Our teams are working to determine the root cause of the incident; • We will share mitigation steps as soon as they become available. We appreciate your patience as we work to resolve this situation. If you are experiencing a critical business impact, please contact our support team through your established channels. Thank you for your continued support and trust in F5.
- monitoring Sep 18, 2026, 09:03 AM UTC
The F5 Distributed Cloud team has identified and resolved the DNS-related issues that resulted in availability degradation for some services. Services have been restored, and our engineering teams are closely monitoring system performance to ensure stability. We appreciate your patience during this time. Thank you for your understanding.
- resolved Sep 18, 2026, 11:37 AM UTC
The F5 Distributed Cloud team has successfully resolved the DNS-related issues that previously caused availability degradation for some services. All corrective measures have been completed and system stability has been thoroughly verified. All affected F5 DNS services have returned to normal operation, and no further impact has been observed during the monitoring period. We thank you for your patience and understanding throughout this incident. If you continue to experience any residual issues, please reach out to support.