On July 19, 2024, a faulty update from cybersecurity company CrowdStrike caused widespread crashes on Windows machines. The update triggered a logic error that resulted in the Blue Screen of Death (BSOD) on affected systems. This outage, primarily affecting systems running CrowdStrike Falcon security software, impacted millions of devices around the world. Critical services like Microsoft 365 and Azure were also disrupted.
The outage was caused by a bug in the CrowdStrike Falcon sensor update. This update contained a logic error that caused a conflict with certain Windows system files. The conflict resulted in a system crash, leading to the BSOD.
The outage began around 4:09 UTC on July 19th and lasted for several hours. It affected businesses and governments worldwide, disrupting operations in various sectors, including airlines, banks, hospitals, and manufacturing. Both CrowdStrike and Microsoft responded quickly to address the issue. CrowdStrike identified the bug and released a fix within hours. Microsoft also provided technical guidance and support to help customers recover their systems.
The 2024 CrowdStrike incident highlights the importance of thorough software testing and the potential impact of security software vulnerabilities. It also underscores the need for collaboration between cybersecurity companies and technology vendors to ensure system stability and minimize disruptions.
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