W3C Status - Incident History

Authentication System Incident

Tue, 17 Feb 2026 12:58:29 +0000

Feb 17, 12:58 UTC
Resolved - This incident has been resolved.

Feb 16, 17:01 UTC
Update - We are continuing to monitor for any further issues.

Feb 16, 10:51 UTC
Update - We are continuing to monitor for any further issues.

Feb 16, 10:50 UTC
Monitoring - 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.

spec-generator service migration

Mon, 02 Feb 2026 05:05:15 +0000

Feb 2, 05:05 UTC
Completed - The scheduled maintenance has been completed.

Feb 2, 05:03 UTC
Verifying - Verification is currently underway for the maintenance items.

Feb 2, 05:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Jan 30, 07:09 UTC
Scheduled - On February 2, 2026, we will discontinue the labs instance of spec-generator. That service is now available at https://www.w3.org/publications/spec-generator/.

For more details, please visit:
https://lists.w3.org/Archives/Public/spec-prod/2025OctDec/0008.html

503 on www.w3.org

Fri, 05 Dec 2025 09:28:45 +0000

Dec 5, 09:28 UTC
Resolved - This incident has been resolved.

Dec 5, 09:20 UTC
Monitoring - Our website has been affected by a cloudflare issue. It is now back.

Dec 5, 09:08 UTC
Update - We are continuing to investigate this issue.

Dec 5, 09:07 UTC
Investigating - We are currently investigating this issue.

pad.w3.org update to v2.5.1 and some minor systems work

Fri, 17 Oct 2025 06:32:28 +0000

Oct 17, 06:32 UTC
Completed - The scheduled maintenance has been completed.

Oct 17, 06:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Oct 16, 18:26 UTC
Scheduled - We will be undergoing scheduled maintenance during this time.

pad.w3.org

Mon, 13 Oct 2025 06:40:42 +0000

Oct 13, 06:40 UTC
Completed - The scheduled maintenance has been completed.

Oct 11, 01:34 UTC
Scheduled - Service will be down for minor service maintenance and upgrade to version 2.5.0.

Several services unavailable

Sat, 06 Sep 2025 15:15:50 +0000

Sep 6, 15:15 UTC
Resolved - This incident has been resolved.

Sep 6, 13:35 UTC
Investigating - Some servers are currently experiencing problems which impacts several W3C services including wiki, Member pages, wbs.
We are looking at the issue.

pad.w3.org upgrade

Wed, 09 Jul 2025 06:23:45 +0000

Jul 9, 06:23 UTC
Completed - The scheduled maintenance has been completed.

Jul 9, 06:21 UTC
Update - Scheduled maintenance is still in progress. We will provide updates as necessary.

Jul 9, 06:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Jul 8, 14:02 UTC
Scheduled - Service will be unavailable during the upgrade.

Website software upgrade

Wed, 11 Jun 2025 09:36:51 +0000

Jun 11, 09:36 UTC
Completed - The scheduled maintenance has been completed.

Jun 11, 07:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Jun 4, 15:08 UTC
Scheduled - We will be upgrading our website software, which may lead to sporadic downtime of parts of the website.

Database server maintenance

Fri, 04 Apr 2025 06:47:44 +0000

Apr 4, 06:47 UTC
Completed - The scheduled maintenance has been completed.

Apr 4, 06:40 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Apr 3, 17:40 UTC
Scheduled - Several database backed services will be offline for a few minutes for an intervention on our main database server.

Brief website outage for a server upgrade

Wed, 02 Apr 2025 04:37:01 +0000

Apr 2, 04:37 UTC
Completed - The scheduled maintenance has been completed.

Apr 2, 04:35 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Apr 2, 04:32 UTC
Scheduled - Our primary website www.w3.org will be unavailable for a few minutes for a server upgrade.

Retiring tr.rdf on March 3rd, 2025

Mon, 03 Mar 2025 05:15:09 +0000

Mar 3, 05:15 UTC
Completed - The scheduled maintenance has been completed.

Mar 3, 05:11 UTC
Verifying - Verification is currently underway for the maintenance items.

Mar 3, 05:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Jan 28, 05:36 UTC
Scheduled - We are planing to discontinue https://www.w3.org/2002/01/tr-automation/tr.rdf starting from March 3rd.
For more details, please visit: https://lists.w3.org/Archives/Public/spec-prod/2025JanMar/0002.html

Mailing list server temporarily unavailable

Fri, 20 Dec 2024 18:18:33 +0000

Dec 20, 18:18 UTC
Resolved - This incident has been resolved.

Dec 20, 18:04 UTC
Investigating - We are currently investigating this issue.

spec-generator is timing out

Fri, 06 Dec 2024 08:16:35 +0000

Dec 6, 08:16 UTC
Resolved - This incident has been resolved.

Dec 5, 14:19 UTC
Identified - A recent upgrade of the spec-generator dependencies is causing timeouts when generating document snapshots. A fix is in progress.

SSO authentication for www.w3.org

Mon, 02 Dec 2024 09:19:04 +0000

Dec 2, 09:19 UTC
Completed - The scheduled maintenance has been completed.

Nov 29, 17:04 UTC
Scheduled - Single-Sign On (SSO) authentication has been available on some of our services for some time now (particularly lists.w3.org).

On Monday December 2, 2024 we are going to switch authentication to SSO on our main content servers (www.w3.org).

In SSO, login means that instead of getting an authentication pop-up prompt on your browser, your browser will be redirected to an authentication form on https://auth.w3.org/.

SSO authentication on www.w3.org has been available since a while too, but it has been limited to the staff. With this change, we are expanding its coverage for everyone.

After the roll-out of this change, HTTP Basic Authentication will only be required in a few isolated cases on www.w3.org.

Note that some of our services such as wikis and blogs use their own authentication systems and are not included in our deployment of SSO.

IRC server crash

Mon, 14 Oct 2024 16:34:00 +0000

Oct 14, 16:34 UTC
Resolved - 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.

Dropping TheMatrix -> W3C IRC bridge.

Tue, 09 Apr 2024 14:26:59 +0000

Apr 9, 14:26 UTC
Resolved - This incident has been resolved.

Apr 9, 14:26 UTC
Investigating - Due to abuse we are deprecating the TheMatrix -> W3C IRC bridge experiment. We have asked that the bridge be shut down.

Affected users are asked to connect to our irc server using either an irc client or our web irc client.

irc server minor maintenance at 08h00 UTC (09h00 CET)

Wed, 27 Mar 2024 08:15:03 +0000

Mar 27, 08:15 UTC
Completed - The scheduled maintenance has been completed.

Mar 27, 08:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Mar 27, 00:25 UTC
Scheduled - We are going to do some finetuning to the irc service. The irc service will be available intermittently during
the maintenance.

Mailing list server maintenance

Wed, 27 Mar 2024 02:30:02 +0000

Mar 27, 02:30 UTC
Completed - The scheduled maintenance has been completed.

Mar 27, 02:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Mar 25, 22:10 UTC
Scheduled - W3C's mailing list service will be unavailable for 30 minutes starting at 02:00 UTC March 27, while the system is moved to a new host. Any email sent to W3C lists will be queued and delivered once the maintenance has been completed. The online mailing list archives will remain available throughout.

Web IRC client service migration

Tue, 26 Mar 2024 08:38:36 +0000

Mar 26, 08:38 UTC
Completed - This migration has been completed.

The new Web interface is available at: https://webirc.w3.org/
Please note that the web IRC application was changed to The Lounge (https://thelounge.chat/) as the previous application qwebirc was not maintained anymore (no support for Python3).

If you are facing accessibility issues with the Lounge we recommend that you use an IRC client directly from your computer. You can also report those on the project site - https://github.com/thelounge/thelounge

Mar 26, 08:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Mar 25, 18:24 UTC
Scheduled - The W3C Web IRC client service (https://irc.w3.org/), used to access our IRC network thru the web, will be migrated to a new app and host on Tuesday, 26 March, starting at 08:00 UTC and will be available back at some time later that day.

Direct irc client access to our irc network wont be affected. Please keep in mind that our irc servers will also be migrated on 2024-03-26 and won't be available from 08h00-08h30 UTC.

Please check this page for updates for the status on the W3C Web IRC Client service.

irc server maintenance

Tue, 26 Mar 2024 08:28:32 +0000

Mar 26, 08:28 UTC
Completed - The scheduled maintenance has been completed.

Mar 26, 08:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Mar 26, 08:00 UTC
Update - The W3C IRC service (irc.w3.org) will be migrated to a new server on Tuesday, 26 March, starting at 08:00 UTC.

This service will not be available during its migration which is scheduled to last approximately 30mins.

Mar 25, 18:16 UTC
Scheduled - The W3C IRC service (irc.w3.org) will be migrated to a new server on Tuesday, 26 March, starting at 08:00 UTC.

This service will not be available during its migration which is scheduled to last approximately 30mins.

pad.w3.org server maintenance

Wed, 20 Mar 2024 09:00:56 +0000

Mar 20, 09:00 UTC
Completed - The scheduled maintenance has been completed.

Mar 20, 08:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Mar 19, 16:25 UTC
Scheduled - The pad.w3.org service will be migrated to a new server on Wednesday, 20 March, starting at 08:00 UTC.

This service will not be available during its migration which is scheduled to last approximately one hour.

www.w3.org servers maintenance

Sun, 10 Mar 2024 16:45:44 +0000

Mar 10, 16:45 UTC
Completed - The scheduled maintenance has been completed.

Mar 10, 16:00 UTC
Verifying - Verification is currently underway for the maintenance items.

Mar 10, 13:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Mar 7, 09:58 UTC
Scheduled - We will be migrating the www.w3.org web site, database, CGI and CVS servers to a new hosting provider on Sunday 10 March 2024 starting at 13:00 UTC.

During this maintenance most of our services will be read-only or in a degraded mode, including but not limited to:
- W3C User accounts creation and edition
- TR Publishing with Echidna
- WBS
- W3C Membership applications
- Publishing of minutes
- Changing access rights of content
- Deliveries to mailing lists

We expect this maintenance to take between 2-4 hours.

validator.w3.org servers maintenance

Thu, 29 Feb 2024 05:20:10 +0000

Feb 29, 05:20 UTC
Completed - The scheduled maintenance has been completed.

Feb 29, 05:15 UTC
Verifying - Verification is currently underway for the maintenance items.

Feb 29, 05:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Feb 27, 11:23 UTC
Scheduled - The validator.w3.org servers will be migrated on Thursday, 29 February, starting at 05:00 UTC.

We do not expect any downtime during this migration.

Partial service outage during network maintenance

Thu, 01 Feb 2024 18:49:16 +0000

Feb 1, 18:49 UTC
Completed - The scheduled maintenance has been completed.

Feb 1, 18:00 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Feb 1, 17:46 UTC
Scheduled - Some W3C services will be unavailable due to scheduled network maintenance at our hosting provider. Most of the public W3C web site and email discussion lists are expected to remain available.

labs.w3.org server maintenance

Thu, 01 Feb 2024 05:22:25 +0000

Feb 1, 05:22 UTC
Completed - The scheduled maintenance has been completed.

Feb 1, 04:31 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.

Jan 31, 16:17 UTC
Scheduled - The labs.w3.org servers will be migrated on Thursday, 01 February, starting at 04:30 UTC.

No services should be affected by this migration.