Yousign incident

V2 & V3 - Access to products v2 & v3 unavailable

Critical Resolved View vendor source →

Yousign experienced a critical incident on December 4, 2025 affecting API V2 - https://api.yousign.com and APP V3 - https://yousign.app and 1 more component, lasting 1h 2m. The incident has been resolved; the full update timeline is below.

Started
Dec 04, 2025, 11:20 AM UTC
Resolved
Dec 04, 2025, 12:22 PM UTC
Duration
1h 2m
Detected by Pingoru
Dec 04, 2025, 11:20 AM UTC

Affected components

API V2 - https://api.yousign.comAPP V3 - https://yousign.appAPP V2 - https://webapp.yousign.comAPI V3 - https://api.yousign.app

Update timeline

  1. investigating Dec 04, 2025, 11:19 AM UTC

    We are seeing a signature delay. We apologize for any inconvenience. If you have urgent questions, please contact our support team by sending an email to [email protected]

  2. investigating Dec 04, 2025, 11:20 AM UTC

    We are continuing to investigate this issue.

  3. identified Dec 04, 2025, 11:20 AM UTC

    The issue has been identified and our team is working on a fix. All applications are accessible, however signature processing is still experiencing a delay.

  4. identified Dec 04, 2025, 11:50 AM UTC

    The v2 and v3 applications have been unavailable since 12:46. Our teams are currently investigating the issue.

  5. identified Dec 04, 2025, 11:57 AM UTC

    Applications v2 and v3 are now available. We continue to experience delays in signing.

  6. monitoring Dec 04, 2025, 12:17 PM UTC

    eSignature and eSeal are fully back to normal. A Postmortem will be publish soon.

  7. resolved Dec 04, 2025, 12:22 PM UTC

    All applications have been operational again since 13:15, and all pending eSignatures and eSeal were fully processed by 13:10. All services are now fully operational. The root cause of the incident has been clearly identified. We apologize for the impact this has had on your activity, and we will provide a full description of these events in the upcoming postmortem.

  8. postmortem Dec 04, 2025, 03:48 PM UTC

    **Impact and Incident Resolution Report** Dear Yousign users, On December 4th, 2025 at 12:09 CET, our services experienced delays in signatures. The resolution required a hardware intervention at 12:46 CET which led to service unavailability. With the end of the intervention, all services were fully restored at 12:57 CET and delay returned to normal at 13:10 CET. Below is a detailed explanation of the events and the actions being taken. ## Summary of the incident A network malfunction occurred on one of the components of our load balancing layer, responsible for directing incoming traffic to our application services. The load balancer entered again in a faulty state. During this period, Yousign applications and API were still available but delaying signatures \(including eSeal\). After investigation, the engineering team had to perform hardware intervention on the faulty equipment in order to restore nominal state. In the mean time, all services were unreachable between 12:46 CET and 12:57 CET. The engineering team had to reload all network configuration. All application services were restored at 12:57 CET. Delay was totally absorbed at 13:10 CET. It is important to known that the failing load balancer is the same one as in recent incidents. ## Root Cause A hardware failure on a load balancing component within our datacenter. ## Next Actions An exceptional maintenance is already planned on Monday December 8th for this equipment. The maintenance is a cornerstone towards increase resilience of all Yousign services. We sincerely apologize for the impact this incident may have had on your operations. Thank you for your understanding and continued trust in Yousign.