Wikimedia Outage History

21 incidents recorded over the last 365 days, 17 of them resolved. Durations are measured from when PulsAPI first saw the problem to when it cleared, which is usually longer than the vendor's own figure.

Live Wikimedia status99.89% uptime history

Every Recorded Wikimedia Incident

Wikimedia incidents, newest first, with date, duration and status.
DateIncidentDurationStatus
Oct 28, 2026Wikis read-only: Datacenter switchoverMaintenance will begin as scheduled in 60 minutes.10 minScheduled
Oct 28, 2026Wikimedia API is unavailableThis incident has been resolved.1h 45mResolved
Oct 22, 2026MaintenanceCloud Services functionality is mostly restored. Further updates will be provided via the Wikitech page. (https://wikitech.wikimedia.org/wiki/Incidents/2026-10-21_PHP_security_update/Community)121h 40mResolved
Oct 21, 2026Emergency MaintenanceScheduled maintenance is currently in progress. We will provide updates as necessary.24h 0mScheduled
Sep 23, 2026Service disruptionServices are back up. We are continuing to monitor.1h 47mResolved
Sep 23, 2026Planned datacenter switchoverWe will be undergoing scheduled maintenance during this time.2h 0mScheduled
Aug 25, 2026Wikipedia and other sites slow or unavailableThis incident has been resolved.1h 31mResolved
Jul 30, 2026Connectivity issues from RussiaThis incident has been resolved.24h 1mResolved
Jul 1, 2026Ongoing network outage, users might be unable to reach the wikisThe impact is resolved, we are monitoring the site health.4 minResolved
Apr 2, 2026Wikipedia and other wikis reporting errors with editsThis incident has been resolved.3h 9mResolved
Mar 25, 2026Wikis read-only: Datacenter SwitchoverThe scheduled maintenance has been completed.1h 30mScheduled
Mar 5, 2026Wikis were in read only modeWikis have been read-write for several hours, and we have now restored most user scripting capabilities.8h 28mResolved
Mar 3, 2026Edits to Wikipedia and other wikis are delayedEverything is back to normal.14 minResolved
Feb 26, 2026Issues and degraded performance accessing WikisThis incident has been resolved.32 minResolved
Feb 25, 2026Issues and degraded performance accessing WikisThis incident has been resolved.43 minResolved
Feb 20, 2026Issues and slow down in EuropeThis incident has been resolved.4h 29mResolved
Jan 26, 2026Issues accessing wikis for some usersA network interruption impacted some users accessing the wikis0 minResolved
Dec 23, 2025Increase of wiki errors.This incident has been resolved.3h 13mResolved
Dec 3, 2025Trouble with some wikisThis incident has been resolved.47 minResolved
Nov 15, 2025Trouble with images and thumbnailsThis incident has been resolved.39 minResolved
Nov 6, 2025Trouble with some wikisWe are aware of issues with accessing some wikis. Some wikimedia sites failed to load with a 429 error for some users.0 minResolved

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How to Read This Wikimedia Incident Log

Each row is an incident PulsAPI observed, not a summary written afterwards. The duration is wall-clock time between the first failing check and the first clean one, so it includes the window before Wikimedia acknowledged anything. Vendor post-mortems typically measure from acknowledgement, which is why their numbers are usually shorter.

Incidents still open have no duration yet and are listed as ongoing rather than being given a running total. The archive covers the last 365 days; anything older has aged out of the window rather than never having happened.

The longest single Wikimedia outage in this window ran 5d 1h, against a mean recovery of 9h 33m. If you depend on Wikimedia in a customer-facing path, the longest figure is the one to design around. The mean is what happens on a normal bad day; the maximum is what happens on the worst one.