Changes / WorkOS / Radar SMS challenge failures for phone numbers in mainland China (+86)
WorkOS: Major incident: Radar SMS challenge failures for phone numbers in mainland China (+86)
Summary
WorkOS reported a major Radar SMS challenge outage for mainland China (+86), preventing affected users from receiving codes or completing verification. It started at 2026-10-15 17:17 UTC and was resolved at 2026-10-15 21:51 UTC, lasting 4 h 34 min; WorkOS reported recovery after its upstream provider enabled alternate delivery routes.
Machine-written from the diff below (Sol; type: incident outage). Check the diff before relying on it.
What changed
Before: not present
After: Radar SMS challenge failures for phone numbers in mainland China (+86)
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After: major
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After: resolved
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After: 2026-10-15 17:17 UTC
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After: 2026-10-15 21:51 UTC
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After: AuthKit, Core Services - AuthKit, Dashboard, Supporting Services - Dashboard
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After: We are investigating an issue affecting Radar SMS challenge verification for phone numbers in mainland China (+86). Affected users may not receive verification codes or may encounter an error when requesting one, preventing them from completing verification. We will provide an update as more information becomes available.
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After: We are seeing some recovery after our upstream provider has enabled alternate delivery routes. We are continuing to monitor.
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After: We've resolved the issue with Radar SMS challenge verifications to China.
First version of this incident archived by Rewindex. View the live incident.
History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Major incident: Radar SMS challenge failures for phone numbers in mainland China (+86) (this change) WorkOS reported a major Radar SMS challenge outage for mainland China (+86), preventing affected users from receiving codes or completing verification. It started at 2026-10-15 17:17 UTC and was resolved at 2026-10-15 21:51 UTC, lasting 4 h 34 min; WorkOS reported recovery after its upstream provider enabled alternate delivery routes. | Major incident |