OutageDB

W3C outage history and status

Is W3C down right now?

No
All Systems Operational Official status as of Oct 26, 2026, 16:17 UTC (refreshing…)
100%
uptime, 90 days
0
incidents, 90 days
—
median time to fix
Jun 29, 2026
last incident

W3C components

Frontend services (Proxy, Firewall, Cache, CDN)

W3C outage history

Nov: 0 incidents, 0 min of major outage Nov Dec: 1 incidents, 21 min of major outage 1 Dec Jan: 0 incidents, 0 min of major outage Jan Feb: 1 incidents, 0 min of major outage 1 Feb Mar: 0 incidents, 0 min of major outage Mar Apr: 0 incidents, 0 min of major outage Apr May: 0 incidents, 0 min of major outage May Jun: 1 incidents, 105 min of major outage 1 Jun Jul: 0 incidents, 0 min of major outage Jul Aug: 0 incidents, 0 min of major outage Aug Sep: 0 incidents, 0 min of major outage Sep Oct: 0 incidents, 0 min of major outage Oct
W3C incidents per month, last 12 months. Red: months with a major or critical outage.
Started (UTC)IncidentImpactDuration
Jun 29, 2026, 10:36 UTC Authentication server not responding
Website
 Major 1 h 45 min
Feb 16, 2026, 10:50 UTC Authentication System Incident
Website, User & Group Management, TR Publication, Email & Mailing Lists, IRC, Validation Services
 Minor 26 h 08 min
Dec 5, 2025, 09:07 UTC 503 on www.w3.org
Website, User & Group Management, TR Publication, Email & Mailing Lists, API, Validation Services
 Critical 21 min
Sep 6, 2025, 13:35 UTC Several services unavailable No impact 1 h 40 min
Dec 20, 2024, 18:04 UTC Mailing list server temporarily unavailable
Email & Mailing Lists
 No impact 14 min
Dec 5, 2024, 14:19 UTC spec-generator is timing out No impact 17 h 58 min
Oct 14, 2024, 16:30 UTC IRC server crash No impact 4 min
Apr 9, 2024, 14:26 UTC Dropping TheMatrix -> W3C IRC bridge.
IRC
 No impact <1 min
Oct 11, 2023, 15:37 UTC Timeouts for some resources on www.w3.org
Website
 No impact 23 h 04 min
Oct 8, 2023, 20:59 UTC Slowness of W3C website
Website
 Minor 10 h 49 min
Aug 17, 2023, 12:49 UTC Mailing list archives outage
Email & Mailing Lists
 Major 1 h 49 min
Mar 21, 2023, 15:12 UTC Network issues impacting W3C website
Website, User & Group Management, TR Publication, Email & Mailing Lists, IRC, API
 Major 3 h 16 min
Feb 3, 2023, 14:50 UTC IRC Server not reachable
IRC
 Critical 19 min
Jan 12, 2023, 09:51 UTC db minor maintenance
Website, User & Group Management, TR Publication
 Minor 7 min
Jan 5, 2023, 10:12 UTC W3C Blogs outage
Website
 Major 4 h 25 min
Aug 19, 2022, 15:15 UTC www.w3.org experiencing issues
Website, User & Group Management, TR Publication
 Critical 26 min
Jul 1, 2022, 20:27 UTC Web authentication portal redirection loop No impact —
Apr 18, 2022, 17:00 UTC Occasional service interruptions due to network maintenance Major <1 min
Feb 28, 2022, 13:31 UTC Several services unavailable
TR Publication, API, Validation Services
 Critical 44 h 37 min
Jan 22, 2022, 17:27 UTC Many W3C services unavailable due to power outage
Website, User & Group Management, TR Publication, Email & Mailing Lists, IRC, API
 Major 8 h 36 min
Oct 25, 2021, 08:48 UTC Infinite loop on lists.w3.org when accessing protected resources
Email & Mailing Lists
 Major 20 min
Oct 5, 2021, 10:23 UTC Various W3C services are unresponsive due to ongoing cloud infrastructure outage
Website, User & Group Management, TR Publication, Email & Mailing Lists, IRC, API
 Major 27 h 46 min
Sep 29, 2021, 06:57 UTC Degraded performances on some W3C services
Website, Email & Mailing Lists, API
 Minor 6 h 08 min
Jul 7, 2021, 01:01 UTC Cloud hosting infrastructure outage
Website, User & Group Management, TR Publication, Email & Mailing Lists, IRC, API
 Minor 22 days 16 h
Jun 2, 2021, 04:00 UTC SSL certificate issue
IRC
 Major 2 h 20 min

26 incidents in our archive since June 1, 2021.

When and where W3C fails

Most affected, last 12 months

  • Website3
  • Chapters2
  • Email & Mailing Lists2
  • TR Publication2
  • User & Group Management2
  • Validation Services2
  • API1
  • Backend storage service1

When W3C went down with others

Other developer tools services

FAQ

Is W3C down right now?
At our last check W3C's official status page reported: All Systems Operational. This page refreshes the status every few minutes.
How often does W3C go down?
W3C reported 0 incidents in the last 90 days (0 major or critical), with 0 minutes of major outage: 100% uptime.
When was the last W3C outage?
The latest reported incident started on Jun 29, 2026, 10:36 UTC: "Authentication server not responding", resolved after 1 h 45 min.

Source: W3C official status page · RSS of W3C incidents · status badge for your site