Faulty CrowdStrike update crashes 8.5 million Windows PCs
A defective Falcon sensor content update sent Windows machines into boot loops worldwide, grounding flights, taking banks, broadcasters and NHS GP systems offline, in the largest IT outage on record.
- Service
- CrowdStrike / Microsoft Windows
- Date
- 19 July 2024
- Cause
- Software bug
- Duration
- Not stated or multi-day
- Status
- resolved
- Severity
- critical
- Region
- Global
- Source
- ThousandEyes ↗
Cite this
Nuffield Consulting, “Faulty CrowdStrike update crashes 8.5 million Windows PCs”, The Daily Tech Wire outage & breach log, 19 Jul 2024. https://techwire.nuffieldconsulting.com/incidents/2024-07-19-crowdstrike-microsoft-windows-outage/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: ThousandEyes, https://thousandeyes.com/blog/top-internet-outages-2024.
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