Microsoft Kills Excel Copilot Function After Only 1 Year in Preview
Microsoft is pulling the plug on Excel's COPILOT() function on September 14, 2026, barely a year after its August 2025 preview debut. The AI-powered feature, which allowed users to describe tasks in natural language directly within worksheet cells, never reached public launch. Microsoft is directing users to the Copilot side pane instead, citing a need to streamline the AI experience.