W3C Outage History
W3C is up right nowPingoru has recorded 26 incidents for W3C: 3 in the last 12 months and 0 in the last 90 days.
Show as a table
| Month | Incidents | Hours with an open incident |
|---|---|---|
| April 2026 | 0 | 0 of 720 (0%) |
| May 2026 | 0 | 0 of 744 (0%) |
| June 2026 | 1 | 2 of 720 (0%) |
| July 2026 | 0 | 0 of 744 (0%) |
| August 2026 | 0 | 0 of 744 (0%) |
| September 2026 | 0 | 0 of 720 (0%) |
| October 2026 | 0 | 0 of 519 (0%) |
Incidents, newest first
Major June 29, 2026 Authentication server not responding 1h 45m Website
Started Jun 29, 2026, 10:36 AM UTC· resolved Jun 29, 2026, 12:22 PM UTC
- investigating Jun 29, 2026, 10:36 AM UTC
Our main authentication server (https://auth.w3.org) is currently unresponsive. We are investigating the issue.
- identified Jun 29, 2026, 10:54 AM UTC
The issue has been identified and a fix is being implemented.
- monitoring Jun 29, 2026, 11:05 AM UTC
A fix has been implemented and we are monitoring the results.
- resolved Jun 29, 2026, 12:22 PM UTC
This incident has been resolved.
Minor February 16, 2026 Authentication System Incident 1d 2h Website, User & Group Management, TR Publication, Email & Mailing Lists and 5 more
Started Feb 16, 2026, 10:50 AM UTC· resolved Feb 17, 2026, 12:58 PM UTC
- monitoring Feb 16, 2026, 10:50 AM UTC
We are currently experiencing an issue with our authentication system that is impacting all our services. We have identified the issue and are actively working on fixing it. During this time, existing sessions may intermittently fail, and new authentication attempts may be unsuccessful. We appreciate your patience and understanding while we work to resolve this matter.
- monitoring Feb 16, 2026, 10:51 AM UTC
We are continuing to monitor for any further issues.
- monitoring Feb 16, 2026, 05:01 PM UTC
We are continuing to monitor for any further issues.
- resolved Feb 17, 2026, 12:58 PM UTC
This incident has been resolved.
Critical December 5, 2025 503 on www.w3.org 21m Website, User & Group Management, TR Publication, Email & Mailing Lists and 3 more
Started Dec 05, 2025, 09:07 AM UTC· resolved Dec 05, 2025, 09:28 AM UTC
- investigating Dec 05, 2025, 09:07 AM UTC
We are currently investigating this issue.
- investigating Dec 05, 2025, 09:08 AM UTC
We are continuing to investigate this issue.
- monitoring Dec 05, 2025, 09:20 AM UTC
Our website has been affected by a cloudflare issue. It is now back.
- resolved Dec 05, 2025, 09:28 AM UTC
This incident has been resolved.
Notice September 6, 2025 Several services unavailable 1h 39m
Started Sep 06, 2025, 01:35 PM UTC· resolved Sep 06, 2025, 03:15 PM UTC
- investigating Sep 06, 2025, 01:35 PM UTC
Some servers are currently experiencing problems which impacts several W3C services including wiki, Member pages, wbs. We are looking at the issue.
- resolved Sep 06, 2025, 03:15 PM UTC
This incident has been resolved.
Notice December 20, 2024 Mailing list server temporarily unavailable 13m Email & Mailing Lists
Started Dec 20, 2024, 06:04 PM UTC· resolved Dec 20, 2024, 06:18 PM UTC
- investigating Dec 20, 2024, 06:04 PM UTC
We are currently investigating this issue.
- resolved Dec 20, 2024, 06:18 PM UTC
This incident has been resolved.
Notice December 5, 2024 spec-generator is timing out 17h 57m
Started Dec 05, 2024, 02:19 PM UTC· resolved Dec 06, 2024, 08:16 AM UTC
- identified Dec 05, 2024, 02:19 PM UTC
A recent upgrade of the spec-generator dependencies is causing timeouts when generating document snapshots. A fix is in progress.
- resolved Dec 06, 2024, 08:16 AM UTC
This incident has been resolved.