Robbins Geller Rudman & Dowd LLP filed a class action lawsuit against Microsoft Corporation on Friday, on behalf of investors who suffered losses tied to the company's AI-related product failures. The lawsuit targets Microsoft directly and names the company's Gemini AI assistant product as a contributing factor. The firm says the MSFT share price continued declining in the days following Microsoft's Q2 2026 earnings release. The filing centers on whether Microsoft made materially misleading statements about the performance and commercial viability of its AI products. Robbins Geller argues the market's reaction to the earnings report reflected undisclosed problems investors could not have anticipated. The firm is soliciting lead plaintiff applications from institutional and retail investors with substantial losses during the class period. Under federal securities law, the lead plaintiff deadline is typically set 60 days from the date the action is filed. Robbins Geller has prosecuted large securities class actions before, obtaining a $7.2 billion recovery in the Enron case and a $3 billion recovery in the WorldCom matter. Microsoft has leaned heavily on AI partnerships and product integration in its recent earnings communications, tying revenue growth projections to its Copilot suite and expanded Gemini integrations announced in early 2026. When Q2 2026 results landed below analyst consensus on AI-driven cloud metrics, the stock dropped sharply. The lawsuit fits a wider pattern, as AI governance and product liability claims against large technology firms have increased since early 2026.