The incident has been resolved. A full rollback has been operated, regarding the maintenance OPS-4485 and OPS-4479.
Service Impact Uplink messages capture - UP Uplink message storage and archiving - UP Uplink callbacks dispatch - UP Uplink callbacks retrieval ("callback not sent" status) - UP Downlink sequences - UP Downlink customer platform call backs - UP API service - UP backend.sigfox.com access - UP
Start Date and Time 13/11/26 2:00 pm CET
End Date and Time 13/11/26 8:20 pm CET
Root cause analysis Only callbacks url using certificate authority COMODO were impacted as they are deprecated on the new version of our Servers.
Posted Nov 13, 2026 - 20:34 CET
Monitoring
The incident is due to an upgrade of our Infrastructure and affects only the Comodo certificate authority, which has been deprecated in the last version of our servers. A full rollback has been completed now, the callbacks in error (using Comodo) are now OK.
Posted Nov 13, 2026 - 20:22 CET
Investigating
Please be advised there is an incident on Sigfox network Analysis of the root cause is still on-going and will be communicated to you as soon as possible.
Incident reference CORP-46419
Severity S1
Service Impact Uplink messages capture - UP Uplink message storage and archiving - UP Uplink callbacks dispatch - DEGRADED Uplink callbacks retrieval ("callback not sent" status) - DEGRADED Downlink sequences - DEGRADED Downlink customer platform call backs - DEGRADED API service - UP backend.sigfox.com access - UP
Start Date and Time 13/11/26 2:00 pm CET
End Date and Time ----
Root cause analysis Seems to be linked to OPS-4485 OPS-4479
Posted Nov 13, 2026 - 20:05 CET
This incident affected: IoT Connectivity Service (Uplink, Downlink).