Microsoft Faces Copilot, Azure Securities Lawsuits

Multiple investor-rights law firms, including Bronstein, Gewirtz & Grossman, LLC, Rosen Law Firm, The Schall Law Firm, Pomerantz LLP, Bleichmar Fonti & Auld LLP, the Law Offices of Howard G. Smith, and Glancy Prongay & Murray, have filed or announced class action lawsuits against Microsoft. These lawsuits allege that Microsoft and its officers made false and misleading statements to investors between May 1, 2025, and January 28, 2026. The core allegations revolve around significant problems with Microsoft's Microsoft AI products, including brand positioning, user experience, computational capacity, and interoperability issues. It is also alleged that Microsoft's AI model performed poorly against competitors and that the company diverted billions in capital expenditures and CPU/GPU capacity from its profitable Microsoft — Microsoft Azure services to improve Microsoft and AI-related R&D. As a result, Microsoft allegedly failed to convert a significant percentage of Microsoft 365 users to paid Microsoft subscriptions, leading to market share loss for Microsoft. These disclosures caused Microsoft's stock price to fall by nearly 10% on January 29, 2026, erasing approximately $357 billion in market value. The United States — City of St. Clair Shores Police and Fire Retirement System is leading one of these proposed class actions, naming CEO Satya Nadella and CFO Amy Hood as defendants. The deadline for investors to request to be appointed as lead plaintiff is August 11, 2026.