Outage in Optimizely
Problems Accessing Experimentation UI
Resolved MajorIncident Report
We are currently investigating issues when trying to access to use the Experimentation application UI, and will post updates here when we have identified the problem.
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Latest Updates ( sorted recent to last )
RESOLVED
23 days ago - at 09/24/2025 08:11PM
This incident has been resolved.
MONITORING
23 days ago - at 09/24/2025 06:38PM
We are continuing to monitor the fix. During the incident, some authentication tokens were generated incorrectly, and these are stored in a cookie with a one hour expiration. If you continue to experience issues, please log out of the application, clear browser cookies, and log back in.
MONITORING
23 days ago - at 09/24/2025 06:15PM
A fix has been implemented and we are monitoring the results.
IDENTIFIED
23 days ago - at 09/24/2025 05:50PM
The issue has been identified and a fix is being implemented.
INVESTIGATING
23 days ago - at 09/24/2025 04:57PM
We are currently investigating issues when trying to access to use the Experimentation application UI, and will post updates here when we have identified the problem.
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