Episerver incident
Increased Error Rate While Viewing Web Experimentation Project Listing
Episerver experienced a major incident on November 19, 2025 affecting App UI, lasting 1d 4h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Nov 19, 2025, 08:03 PM UTC
We're currently investigating an issue where some users are encountering an error message while accessing the project listing for Web Experimentation projects.
- identified Nov 19, 2025, 08:14 PM UTC
We have identified an issue related to underlying search functionality supporting some user experience areas and our search API. We're working on a fix now.
- identified Nov 19, 2025, 08:57 PM UTC
This will also affect the 'Audiences' search picker component within the FX 'Configure Rule' panel UI as that also relies on the same search system.
- identified Nov 19, 2025, 09:28 PM UTC
We are continuing to work on a fix for this issue. The occurrence of errors is declining however some filtering capabilities may not behave as expected.
- identified Nov 19, 2025, 10:25 PM UTC
The issue with filtering capabilities is continuing to gradually resolve. We will continue to update as this process progresses.
- identified Nov 20, 2025, 01:55 AM UTC
Filtering capabilities continue to be restored and we continue to monitor the process. Thank you for your patience.
- monitoring Nov 20, 2025, 06:37 AM UTC
We are continuing to monitor the recovery of filtering capabilities in the application, which is proceeding.
- monitoring Nov 20, 2025, 12:21 PM UTC
We're continuing to test and evaluate the completeness of the recovery process.
- monitoring Nov 20, 2025, 04:55 PM UTC
The restoration of filtering capabilities is complete. We are monitoring capabilities post-resolution to ensure continued expected behavior.
- resolved Nov 21, 2025, 01:42 AM UTC
This incident has been resolved.