W3C Outage History

W3C is up right now

W3C had 7 outages in the last 2 years totaling 48h 9m of downtime — averaging 0.3 incidents per month.

There were 7 W3C outages since October 14, 2024 totaling 48h 9m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.w3.org

Major June 29, 2026

Authentication server not responding

Detected by Pingoru
Jun 29, 2026, 10:36 AM UTC
Resolved
Jun 29, 2026, 12:22 PM UTC
Duration
1h 45m
Affected: Website
Timeline · 4 updates
  1. investigating Jun 29, 2026, 10:36 AM UTC

    Our main authentication server (https://auth.w3.org) is currently unresponsive. We are investigating the issue.

  2. identified Jun 29, 2026, 10:54 AM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Jun 29, 2026, 11:05 AM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Jun 29, 2026, 12:22 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor February 16, 2026

Authentication System Incident

Detected by Pingoru
Feb 16, 2026, 10:50 AM UTC
Resolved
Feb 17, 2026, 12:58 PM UTC
Duration
1d 2h
Affected: WebsiteUser & Group ManagementTR PublicationEmail & Mailing ListsIRCValidation ServicesChaptersBackend storage servicePad
Timeline · 4 updates
  1. 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.

  2. monitoring Feb 16, 2026, 10:51 AM UTC

    We are continuing to monitor for any further issues.

  3. monitoring Feb 16, 2026, 05:01 PM UTC

    We are continuing to monitor for any further issues.

  4. resolved Feb 17, 2026, 12:58 PM UTC

    This incident has been resolved.

Read the full incident report →

Critical December 5, 2025

503 on www.w3.org

Detected by Pingoru
Dec 05, 2025, 09:07 AM UTC
Resolved
Dec 05, 2025, 09:28 AM UTC
Duration
21m
Affected: WebsiteUser & Group ManagementTR PublicationEmail & Mailing ListsAPIValidation ServicesChapters
Timeline · 4 updates
  1. investigating Dec 05, 2025, 09:07 AM UTC

    We are currently investigating this issue.

  2. investigating Dec 05, 2025, 09:08 AM UTC

    We are continuing to investigate this issue.

  3. monitoring Dec 05, 2025, 09:20 AM UTC

    Our website has been affected by a cloudflare issue. It is now back.

  4. resolved Dec 05, 2025, 09:28 AM UTC

    This incident has been resolved.

Read the full incident report →

Notice September 6, 2025

Several services unavailable

Detected by Pingoru
Sep 06, 2025, 01:35 PM UTC
Resolved
Sep 06, 2025, 03:15 PM UTC
Duration
1h 39m
Timeline · 2 updates
  1. 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.

  2. resolved Sep 06, 2025, 03:15 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice December 20, 2024

Mailing list server temporarily unavailable

Detected by Pingoru
Dec 20, 2024, 06:04 PM UTC
Resolved
Dec 20, 2024, 06:18 PM UTC
Duration
13m
Affected: Email & Mailing Lists
Timeline · 2 updates
  1. investigating Dec 20, 2024, 06:04 PM UTC

    We are currently investigating this issue.

  2. resolved Dec 20, 2024, 06:18 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice December 5, 2024

spec-generator is timing out

Detected by Pingoru
Dec 05, 2024, 02:19 PM UTC
Resolved
Dec 06, 2024, 08:16 AM UTC
Duration
17h 57m
Timeline · 2 updates
  1. 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.

  2. resolved Dec 06, 2024, 08:16 AM UTC

    This incident has been resolved.

Read the full incident report →

Notice October 14, 2024

IRC server crash

Detected by Pingoru
Oct 14, 2024, 04:30 PM UTC
Resolved
Oct 14, 2024, 04:34 PM UTC
Duration
4m
Timeline · 1 update
  1. resolved Oct 14, 2024, 05:32 PM UTC

    The server that host the IRC service crashed at 16:34 UTC. The server was rebooted and this service was restored at 16:50 UTC.

Read the full incident report →