Outage in Quad9
Global - Some PoPs are failing OCSP Validation
Resolved MajorIncident Report
Summary AI Generated
Quad9's global Points of Presence (PoPs) experienced OCSP validation failures for approximately 2.5 hours, causing encrypted DNS protocols to malfunction and preventing TLS handshakes from completing. Users were unable to establish secure DNS connections during this period. The issue was resolved after 41 minutes of active investigation.
Some global PoPs are failing OCSP validation, which may result in encrypted DNS protocols to stop working depending on the implementation.
Components affected
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Latest Updates ( sorted recent to last )
RESOLVED
28 days ago - at 03/22/2026 06:31PM
This issue is resolved.
Approximate Start (some locations): 15:45 UTC
Issue Stop: 18:15 UTC
INVESTIGATING
28 days ago - at 03/22/2026 05:52PM
Some global PoPs are failing OCSP validation, which may result in encrypted DNS protocols to stop working depending on the implementation.
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