Yousign incident
Global Service Degradation – Access to Products v2 & v3 Unavailable
Yousign experienced a major incident on November 27, 2025 affecting API V2 - https://api.yousign.com and APP V3 - https://yousign.app and 1 more component, lasting 3h 11m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Nov 27, 2025, 07:52 AM UTC
Since 08:36, access to Yousign products v2 and v3 has been degraded, affecting both the applications and the API. Our teams are actively investigating to identify the root cause and restore normal service as quickly as possible. We will provide updates as the situation evolves.
- investigating Nov 27, 2025, 08:06 AM UTC
Since 09:00, both the applications and the API are available again. We are still processing the different backlogs accumulated during the incident, which may cause some delays. We will notify you as soon as everything is fully back to normal.
- monitoring Nov 27, 2025, 08:13 AM UTC
Since 09:10, all services are fully back to normal, the delay has been recovered. Our Engineering teams are now analyzing the root cause of the incident. At this stage, the issue appears to be linked to an impact on our provider’s infrastructure. We will conduct a joint analysis with them to confirm and understand the sequence of events. We remain in active monitoring.
- resolved Nov 27, 2025, 11:03 AM UTC
This incident has been resolved.
- postmortem Nov 27, 2025, 04:03 PM UTC
\## Incident Impact and Resolution Report Dear Yousign Users, On November 27, 2025 between 08:36 and 09:00 CET, we encountered production issues leading to an important degradation of our services. \## Root Cause Analysis The virtualization service provided by our infrastructure vendor entered a partially unresponsive state, causing a subset of Virtual Machines to stop responding. Our engineering team quickly reacted to qualify the issue and then restarted and conciliated the impacted services. \## Next Actions We are actively challenging our infrastructure provider to determine the root cause of this incident and to elaborate a plan to avoid it in the future as this incident take place after an upgrade of the virtualization service. As of today we have already identified technical points of failure and we will prioritize the remediation accordingly. We would like to apologize for the impact on your service and assure you that every effort is being made to learn from this event and ensure that it does not happen again. Thank you for your understanding and thank you for your continued trust in Yousign.