W3C incidents — OutageDB

Major W3C incident: Authentication server not responding

Mon, 29 Jun 2026 10:36:46 GMT

Resolved after 1 h 45 min.

Minor W3C incident: Authentication System Incident

Mon, 16 Feb 2026 10:50:53 GMT

Resolved after 26 h 08 min.

Critical W3C incident: 503 on www.w3.org

Fri, 05 Dec 2025 09:07:40 GMT

Resolved after 21 min.

No impact W3C incident: Several services unavailable

Sat, 06 Sep 2025 13:35:53 GMT

Resolved after 1 h 40 min.

No impact W3C incident: Mailing list server temporarily unavailable

Fri, 20 Dec 2024 18:04:34 GMT

Resolved after 14 min.

No impact W3C incident: spec-generator is timing out

Thu, 05 Dec 2024 14:19:03 GMT

Resolved after 17 h 58 min.

No impact W3C incident: IRC server crash

Mon, 14 Oct 2024 16:30:00 GMT

Resolved after 4 min.

No impact W3C incident: Dropping TheMatrix -> W3C IRC bridge.

Tue, 09 Apr 2024 14:26:31 GMT

Resolved after <1 min.

No impact W3C incident: Timeouts for some resources on www.w3.org

Wed, 11 Oct 2023 15:37:37 GMT

Resolved after 23 h 04 min.

Minor W3C incident: Slowness of W3C website

Sun, 08 Oct 2023 20:59:07 GMT

Resolved after 10 h 49 min.

Major W3C incident: Mailing list archives outage

Thu, 17 Aug 2023 12:49:06 GMT

Resolved after 1 h 49 min.

Major W3C incident: Network issues impacting W3C website

Tue, 21 Mar 2023 15:12:53 GMT

Resolved after 3 h 16 min.

Critical W3C incident: IRC Server not reachable

Fri, 03 Feb 2023 14:50:53 GMT

Resolved after 19 min.

Minor W3C incident: db minor maintenance

Thu, 12 Jan 2023 09:51:42 GMT

Resolved after 7 min.

Major W3C incident: W3C Blogs outage

Thu, 05 Jan 2023 10:12:06 GMT

Resolved after 4 h 25 min.

Critical W3C incident: www.w3.org experiencing issues

Fri, 19 Aug 2022 15:15:32 GMT

Resolved after 26 min.

No impact W3C incident: Web authentication portal redirection loop

Fri, 01 Jul 2022 20:27:38 GMT

Resolved after —.

Major W3C incident: Occasional service interruptions due to network maintenance

Mon, 18 Apr 2022 17:00:00 GMT

Resolved after <1 min.

Critical W3C incident: Several services unavailable

Mon, 28 Feb 2022 13:31:32 GMT

Resolved after 44 h 37 min.

Major W3C incident: Many W3C services unavailable due to power outage

Sat, 22 Jan 2022 17:27:35 GMT

Resolved after 8 h 36 min.

Major W3C incident: Infinite loop on lists.w3.org when accessing protected resources

Mon, 25 Oct 2021 08:48:26 GMT

Resolved after 20 min.

Major W3C incident: Various W3C services are unresponsive due to ongoing cloud infrastructure outage

Tue, 05 Oct 2021 10:23:15 GMT

Resolved after 27 h 46 min.

Minor W3C incident: Degraded performances on some W3C services

Wed, 29 Sep 2021 06:57:21 GMT

Resolved after 6 h 08 min.

Minor W3C incident: Cloud hosting infrastructure outage

Wed, 07 Jul 2021 01:01:34 GMT

Resolved after 22 days 16 h.

Major W3C incident: SSL certificate issue

Wed, 02 Jun 2021 04:00:00 GMT

Resolved after 2 h 20 min.