Outage in Optimizely

SaaS CMS experiencing degraded performance

Resolved Minor
December 09, 2025 - Started 1 day ago - Lasted 1 day
Official incident page

Incident Report

Following an update to SaaS CMS from v2025.10.29.0332 to v2025.11.11.0638, several customers have reported issues with website applications using SaaS CMS are down or only partially working. We believe this is caused by a certain implementation pattern in next.js applications. If you think your application is affected, please raise a ticket to get assistance restoring your application. We will continue to share the update once it is available. Thank you for your patience.

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Latest Updates ( sorted recent to last )
RESOLVED about 5 hours ago - at 12/11/2025 10:03AM

The incident has been fully resolved for all confirmed impacted customers.
As a follow-up, we recommend that customers whose CMS SaaS version was reverted continue updating the remkoj/* packages to version 5.1.6. Please contact our support team to let them know your preferred timing for redeploying the upgrade.
Thank you for your cooperation and patience throughout this process.

MONITORING about 23 hours ago - at 12/10/2025 03:38PM

We still continuing to monitor for any further issues. If customers use the remkoj/* packages: https://www.npmjs.com/search?q=%40remkoj%2Foptimizely-cms-nextjs they should be updated to version 5.1.6.

MONITORING 1 day ago - at 12/10/2025 02:08PM

We are continuing to monitor for any further issues. If customers use the remkoj/* packages: https://www.npmjs.com/search?q=%40remkoj%2Foptimizely-cms-nextjs they should be updated to version 5.1.6.

MONITORING 1 day ago - at 12/10/2025 12:44PM

A fix has been implemented and we are monitoring the results. If customers use the remkoj/* packages: https://www.npmjs.com/search?q=%40remkoj%2Foptimizely-cms-nextjs they should be updated to version 5.1.6.

IDENTIFIED 1 day ago - at 12/10/2025 11:45AM

The issue has been identified and a fix is being implemented. Thank you for your patience!

INVESTIGATING 1 day ago - at 12/10/2025 09:43AM

We are continuing to investigate this issue. We apologize for the inconvenience and will share an update once we have more information.
Thank you for your patience.

INVESTIGATING 1 day ago - at 12/10/2025 07:22AM

A subset of impacted clients has been successfully reverted to the previous version, and all associated sites are fully operational.
Meanwhile, we are continuing to investigate this issue. We apologize for the inconvenience and will share an update once we have more information.
Thank you for your patience.

INVESTIGATING 1 day ago - at 12/10/2025 01:29AM

Following an update to SaaS CMS from v2025.10.29.0332 to v2025.11.11.0638, several customers have reported issues with website applications using SaaS CMS are down or only partially working. We believe this is caused by a certain implementation pattern in next.js applications. If you think your application is affected, please raise a ticket to get assistance restoring your application.

We will continue to share the update once it is available.

Thank you for your patience.

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