Microsoft Axes Claude Code Licenses, Pushes Developers to GitHub Copilot CLI

Microsoft is pulling Claude Code access from thousands of its own engineers, ending a six-month internal experiment with Anthropic's AI coding tool. The cutoff date is June 30th — the last day of Microsoft's fiscal year — making the move partly a cost-cutting measure as the company trims operating expenses heading into FY2027. The Experiences + Devices division, which oversees Windows, Microsoft 365, Outlook, Teams, and Surface, is leading the transition and has been told to migrate workflows to GitHub Copilot CLI in the coming weeks.

Microsoft originally rolled out Claude Code access in December as a deliberate experiment, inviting not just engineers but also designers and project managers to try coding with AI assistance for the first time. The tool proved genuinely popular — perhaps uncomfortably so. Internal sources indicate Microsoft's own developers came to prefer Claude Code over GitHub Copilot CLI, which created an awkward internal dynamic given that Copilot is Microsoft's own product. Rajesh Jha, executive vice president of the Experiences + Devices group, framed the transition in an internal memo as an opportunity to consolidate around a tool Microsoft can actively shape alongside GitHub, tailored to its own repos, security requirements, and engineering workflows.

The decision carries real tension. There are acknowledged capability gaps between the two tools, and engineers who relied on Claude Code for agentic, command-line coding tasks will need to adapt. Microsoft had reportedly explored acquiring Cursor to help close the Copilot gap but has since shifted its attention to other AI startups, partly to avoid regulatory scrutiny. Developers are being asked to file bug reports and feedback on Copilot CLI before the Claude Code cutoff, essentially crowdsourcing the product improvements needed to make the switch viable.

The move doesn't unwind Microsoft's broader relationship with Anthropic. Claude models remain available through Copilot CLI alongside OpenAI and internal Microsoft models, and a separate Foundry deal — giving Microsoft cloud customers access to Claude Sonnet 4.5, Claude Opus 4.1, and Claude Haiku 4.5 — remains intact. Microsoft employees also continue to favor Claude models inside Microsoft 365 apps for certain tasks. The pressure now falls squarely on GitHub to close the gap: Microsoft previously reported that 91% of its engineering teams used GitHub Copilot, but six months of Claude Code adoption has eroded that dominance internally.