Siteimprove Outage History

20 incidents recorded over the last 365 days, 10 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 Siteimprove status100.00% uptime history

Every Recorded Siteimprove Incident

Siteimprove incidents, newest first, with date, duration and status.
DateIncidentDurationStatus
Sep 16, 2026Scheduled MaintenanceThe scheduled maintenance has been completed.1h 0mScheduled
Sep 12, 2026Scheduled Database MaintenanceThe scheduled maintenance has been completed.1h 0mScheduled
Aug 29, 2026Scheduled Database MaintenanceThe scheduled maintenance has been completed.1h 0mScheduled
Aug 19, 2026Scheduled Database MaintenanceThe scheduled maintenance has been completed.1h 0mScheduled
Aug 6, 2026Degraded Performance: AEO Visibility & Analytics Intermittently FailingThe issue affecting the AEO Visibility & Analytics module has been resolved. The module is now operating as expected, and no further impact is expected.183h 35mResolved
Jul 22, 2026Siteimprove Platform Login DisruptionExecutive Summary: On July 16, 2026, some users on our EU and US platforms were unable to log in for approximately two hours. The issue was caused by an outage at a third-party authentication provider, which was itself…-8867 minResolved
May 6, 2026Siteimprove Platform Login Errors (SSO Users)**Executive Summary:** On May 6, 2026, an infrastructure failure in our Kubernetes environment caused SSO login failures for a subset of users for approximately 42 minutes. All other platform functionality was…1h 14mResolved
May 1, 2026Siteimprove Platform Login Errors**Executive Summary:** On May 1, 2026, users on our US platform experienced login failures and slowness for approximately 2.5 hours. The issue was caused by an internal service generating an excessive number of…4h 46mResolved
Apr 29, 2026Degraded Performance - Crawler, Linkchecker, DCI ScoresThe issue causing delays with Siteimprove’s crawler and link checker processing has been resolved. Scan processing has returned to normal, and Digital Certainty Index (DCI) scores and related metrics are now updating…23h 25mResolved
Apr 25, 2026Scheduled Database MaintenanceThe scheduled maintenance has been completed.2h 0mScheduled
Mar 16, 2026Degraded Performance and Login IssuesThe issue affecting logins and various modules throughout the Siteimprove platform is all sorted. We’re sorry for holding you up! If you have any additional questions or feedback, please submit a new support ticket…2h 10mResolved
Mar 7, 2026Scheduled Database MaintenanceThe scheduled maintenance has been completed.1h 0mScheduled
Mar 3, 2026Degraded Performance - CrawlerA summary of this incident has been generated and posted here: [https://help.siteimprove.com/support/solutions/articles/80001199295-faq-incident-response-feb-28th-2026-crawler-degraded-performance](https://help.siteimpro…165h 30mResolved
Feb 28, 2026Scheduled Database MaintenanceThe scheduled maintenance has been completed.1h 0mScheduled
Feb 27, 2026Siteimprove Platform Login ErrorsThe issue that prevented certain Siteimprove customers from logging in has been resolved. If you have any additional questions or feedback, please submit a new support ticket through our Help Center ("?" button)…48 minResolved
Feb 24, 2026Degraded Performance - Crawler/LinkcheckerThis incident has been resolved.28h 1mResolved
Feb 17, 2026Scheduled Database MaintenanceThe scheduled maintenance has been completed.1h 0mScheduled
Feb 12, 2026Scheduled Database MaintenanceThe scheduled maintenance has been completed.1h 0mScheduled
Dec 18, 2025Platform UI Not RenderingThis incident has been resolved.1h 15mResolved
Nov 8, 2025Scheduled MaintenanceThe scheduled maintenance has been completed.1h 0mScheduled

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How to Read This Siteimprove 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 Siteimprove 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 Siteimprove outage in this window ran 7d 15h, against a mean recovery of 22h 12m. If you depend on Siteimprove 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.