We have deployed a hotfix to the WAF that addresses the root cause of this incident. All previously implemented workarounds have been reverted, and the environment has been confirmed stable. This incident is now fully resolved.
Posted Jan 30, 2026 - 21:37 UTC
Update
The initial workaround resolved the issue for the majority of requests. However, a subset of users continued to experience SSO authentication failures when requests passed through the WAF. A secondary workaround has been applied to address this behavior.
Root cause analysis is ongoing with our WAF Dev/QA teams. Preliminary findings indicate an issue with HTTP/2 traffic processing on a small percentage of EMEA nodes.
Posted Jan 30, 2026 - 11:09 UTC
Monitoring
The issue has been identified and a workaround has been implemented to restore portal access in affected regions. We are currently monitoring results.
Posted Jan 30, 2026 - 09:07 UTC
Investigating
We are investigating reports of intermittent inability to load FortiSASE GUI (
If you have any questions regarding this incident, please contact FortiCare Support ( and reference FortiSASE Operations ticket #432035.
Posted Jan 30, 2026 - 08:00 UTC
This incident affected: FortiSASE Services (FortiSASE Portal).