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Microsoft is spending $175 billion on AI while offering buyouts to 60,000 employees. 17 days later, a routine network update took down Outlook, Teams, and Copilot across 74 countries. 430 million users were locked out for 18 hours while European hospitals went back to paper fax machines. This is the story of incident EX1550543 and how Wall Street's favorite AI accounting trick broke the internet's backbone. October 26, 2026 Microsoft Chief People Officer Amy Coleman sends an internal memo across the US, UK, Canada, and India. The company is rolling out a Voluntary Exit Offer to 60,000 employees, roughly 27% of its global workforce. The buyouts reach all the way up to Level 70: - veteran systems engineers - senior directors and general managers - institutional memory built over 20 years Why would a profitable tech giant push 60,000 people toward the door by December 31? Because of how Wall Street grades AI spending: - $175B in AI server racks is CapEx, depreciated slowly over years - 60,000 human salaries are OpEx, deducted 100% from quarterly margins right now Cut the people, buy the GPUs, and your operating margin looks like a masterpiece. November 12, 2026 17 days after the buyout memo, at 12:30 PM EST, a network config change hits Exchange Online. A large batch of core servers suddenly fails Microsoft's automated health checks. The automated system does what it was programmed to do and pulls every failing server offline at once. Then the real nightmare starts. Live traffic from 430 million users dumps onto the few remaining servers in seconds. The sudden flood crushes the login and routing layer, sending 140,000 outage reports straight up on Downdetector. Outlook goes down. Teams goes down. SharePoint goes down. Even Copilot, the flagship AI assistant meant to replace human workflows, goes dark because it runs on the exact same legacy plumbing. Every time engineers try to restart a dropped server, the wall of waiting traffic immediately freezes it again. 18 hours later No AI agent could break the loop. Human engineers had to manually halt deployments, override the health checks, and bleed traffic back in slow stages while extending email timeouts to 48 hours. To this day, Microsoft incident codes EX1550543 and MO1550821 stand as a live stress test of replacing institutional memory with automation. You can spend $175 billion on AI clusters and cut 60,000 roles to make a quarterly earnings slide glow for Wall Street. In enterprise infrastructure, senior engineers aren't bloat on a spreadsheet, they are the only circuit breaker standing between a bad config file and a global blackout.