Message Queuing (MSMQ) is a Microsoft technology that lets applications communicate asynchronously by sending messages to queues, enabling them to run at different times and even when systems or networks are temporarily offline. Microsoft's December 2025 security update disrupted Message Queuing functionality on Windows 10 and Windows Server systems, causing enterprise applications and IIS sites to fail. Users may receive the error message: Insufficient resources to perform operation (0x80004005).

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A blog post by Matthew Prince, Cloudflare's CEO, suggests that Cloudflare repeated CrowdStrike's mistake: updating the entire infrastructure without first testing on a small group of hosts. As a result, large portions of the internet, including 4sysops, were inaccessible for several hours. Apologies for the latter. While most news sites reported that 20% of internet traffic was affected, the actual impact was much higher because the outage disproportionately affected high-traffic, top-ranking websites like X, ChatGPT, Perplexity, and Spotify. While Cloudflare's CEO blames a manual database permissions change, the incident exposes a deeper design flaw: a single engineer can disrupt massive portions of global internet infrastructure. In contrast, blockchain networks like Ethereum demonstrate how truly decentralized systems can prevent such single points of failure.

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