RESOLVED: Major Cloudflare internal server error

Update timeline

1. investigating Dec 05, 2025, 09:09 AM UTC

   We are currently experiencing disruptions with Cloudflare We are aware of the problem and are working on a solution. Our apologies for the inconvenience. At the time of writing this we are not able to give you an estimate on when your environment will be available. The next update will be provided as events warrant until the issue has been resolved. E-mail updates will be sent right away when the issue has been resolved. You can subscribe on the status page (https://status.topdesk.com) for additional updates. To inform TOPdesk you are affected by this issue, please visit https://my.topdesk.com/tas/public/ssp/ . Please refer to incident TDR25 12 2484.

2. monitoring Dec 05, 2025, 09:16 AM UTC

   Cloudflare has introduced a fix. Environments should be back online We will keep monitoring and wait for further messaging. Our apologies for the inconvenience.

3. resolved Dec 05, 2025, 09:43 AM UTC

   Cloudflare has resolved the issue on their status page. We have received feedback that TOPdesk is working as expected. This Major incident will be closed since the issue is resolved. We'd like to apologies once more for the inconvenience and will communicate an RCA once it is received

4. postmortem Dec 19, 2025, 02:59 PM UTC

   A change made to how Cloudflare's Web Application Firewall parses incoming requests caused Cloudflare's network to be unavailable for several minutes this morning. This change was deployed by Cloudflare's team to help mitigate the industry-wide vulnerability disclosed this week in React Server Components. CloudFlare has issued a detailed statement on this matter here: [https://blog.cloudflare.com/5-december-2025-outage/](https://blog.cloudflare.com/5-december-2025-outage/)