Outage in Optimizely
Slow loading and performance issues in Content Marketing Platform (CMP)
Resolved MajorIncident Report
Summary AI Generated
Optimizely's Content Marketing Platform (CMP) experienced slow or failed page loads for approximately 2.5 hours, affecting components including Requests, Analytics, Library, Plan, and Open API — but only for organizations with Google Analytics 4 (GA4) connected to CMP. The root cause was a GA4 slowdown that delayed analytics settings required at load time, causing homepage delays and timeouts of up to 60 seconds. The issue was resolved by deploying a fix that decoupled CMP's loading process from GA4 analytics settings, restoring normal load times.
We are investigating reports that the Optimizely Content Marketing Platform (CMP) is loading slowly or failing to load for some customers.
Affected users may see a loading screen that does not finish, or pages that take much longer than usual to open. The issue is intermittent: pages may load, then slow down again when refreshed.
Our Engineering team has reproduced the issue and is investigating the cause. We will post an update as soon as we learn more.
We apologize for the disruption to your work.
Components affected
Optimizely Requests Optimizely Analytics Optimizely Library Optimizely Plan Optimizely Open APITrusted by 1,000+ teams
The Status Page Aggregator with Early Outage Detection
Stop finding out about outages from your users. Monitor 6,320+ cloud services and get alerted the second something breaks.
Latest Updates ( sorted recent to last )
RESOLVED
about 10 hours ago - at 11/13/2026 06:30PM
This incident has been resolved.
MONITORING
about 10 hours ago - at 11/13/2026 05:52PM
A fix to limit the impact of Google Analytics 4 (GA4) delays on Content Marketing Platform (CMP) has been deployed. CMP no longer waits on GA4 analytics settings before loading, and post-deployment testing, including on affected organizations, shows that load times have returned to expected levels.
The workaround shared in our earlier update is no longer needed. If you continue to see slow loading, please clear your browser cache and reload the page.
We are continuing to monitor CMP performance closely and will post a final update once we confirm the issue is fully resolved
IDENTIFIED
about 11 hours ago - at 11/13/2026 05:34PM
We've identified the cause of the slowness. A slowdown in Google Analytics 4 (GA4), which CMP uses for analytics data, delayed the analytics settings that load with CMP. This slowed the homepage and caused timeouts.
Only organizations with Google Analytics 4 connected to CMP were affected. Organizations without GA4 connected saw no impact. A fix to limit the impact of GA4 delays has been merged, and we're finishing its rollout and monitoring. We'll post another update once things are back to normal.
INVESTIGATING
about 12 hours ago - at 11/13/2026 04:29PM
We have narrowed down the behavior reported in Optimizely Content Marketing Platform (CMP).
Based on our latest findings, CMP is not failing to load. Instead, the first load of the application may take up to approximately 60 seconds to complete, and a loading screen may appear during that time.
We recommend allowing the page to finish loading rather than refreshing as a temporary workaround.
Our Engineering team is continuing to investigate the cause of the delay and to improve load times. We will share more information as soon as we have them at our disposal. We apologize for any inconvenience caused.
INVESTIGATING
about 12 hours ago - at 11/13/2026 04:03PM
We are continuing to investigate this issue.
INVESTIGATING
about 12 hours ago - at 11/13/2026 04:02PM
We are investigating reports that the Optimizely Content Marketing Platform (CMP) is loading slowly or failing to load for some customers.
Affected users may see a loading screen that does not finish, or pages that take much longer than usual to open. The issue is intermittent: pages may load, then slow down again when refreshed.
Our Engineering team has reproduced the issue and is investigating the cause. We will post an update as soon as we learn more.
We apologize for the disruption to your work.
Latest Optimizely outages
Configured Commerce - Mission Control service degredation - about 11 hours ago
Optimizely E-Mail Support Outage - 1 day ago
The Status Page Aggregator with Early Outage Detection
With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.
Start free trialNo credit card required · Cancel anytime · 6320 services available
Integrations with
