Fourth is currently experiencing a major incident affecting Engage and Mobile Apps and 1 more component, which began 2h ago. The vendor's full update timeline is below.
Affected components
Update timeline
- investigating May 28, 2026, 04:58 PM UTC
We are aware of a critical incident that may be affecting some of our customers using our Single Sign On platform. When trying to login, users are met with errors. This will also impact our customer's ability to access connected apps. This is incident is currently being investigated to determine the root cause of the issue. Status and updates will continue here every 30 minutes until the incident has been resolved. We apologise for this disruption to your service.
- investigating May 28, 2026, 05:31 PM UTC
We are continuing to investigate to determine the root cause of the issue. Status and updates will continue here every 30 minutes until the incident has been resolved. We apologise for this disruption to your service.
- investigating May 28, 2026, 05:57 PM UTC
We are exploring multiple avenues of investigation and are seeing signs of recovery We are continuing to work towards identifying the root cause. Status and updates will continue here every 30 minutes until the incident has been resolved. We apologise for this disruption to your service.
- monitoring May 28, 2026, 06:31 PM UTC
We are confident the issue is no longer present and that customers are now able to login successfully. We are continuing to provide an extended period of monitoring to confirm success. The next update will be provided upon confirmation of resolution. We apologise for this disruption to your service.