Episerver experienced a minor incident on December 10, 2025 affecting Australia East and North Europe and 1 more component, lasting 1d 8h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Dec 10, 2025, 01:29 AM UTC
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.
- investigating Dec 10, 2025, 07:22 AM UTC
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 Dec 10, 2025, 09:43 AM UTC
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.
- identified Dec 10, 2025, 11:45 AM UTC
The issue has been identified and a fix is being implemented. Thank you for your patience!
- monitoring Dec 10, 2025, 12:44 PM UTC
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.
- monitoring Dec 10, 2025, 02:08 PM UTC
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 Dec 10, 2025, 03:38 PM UTC
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.
- resolved Dec 11, 2025, 10:03 AM UTC
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.