Outage in Quad9

Warsaw (qwaw2) - Service Degredation / Bad Certificate

Resolved Minor
July 31, 2025 - Started about 2 months ago - Lasted less than a minute
Official incident page

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Outage Details

One of our servers pending decommission/removal somehow found its way back online and started announcing. Since the server is under-powered, this caused service degradation. In addition, it was using our previous SSL certificate, which broke DNS over TLS and DNS over HTTPS. We apologize for any inconvenience caused. Issue Start: 16:45 UTC, July 31st Issue Stop: 19:05 UTC, July 31st
Latest Updates ( sorted recent to last )
RESOLVED about 2 months ago - at 07/31/2025 07:47PM

One of our servers pending decommission/removal somehow found its way back online and started announcing. Since the server is under-powered, this caused service degradation. In addition, it was using our previous SSL certificate, which broke DNS over TLS and DNS over HTTPS.

We apologize for any inconvenience caused.

Issue Start: 16:45 UTC, July 31st
Issue Stop: 19:05 UTC, July 31st

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