Microsoft walks back Windows AI rewriting plan after engineer’s bombshell post sparks massive backlash

Microsoft has walked back a controversial claim about rewriting Windows with AI after backlash from the tech community. A distinguished engineer’s bold LinkedIn post about eliminating C and C++ by 2030 sparked outrage, forcing the company to clarify what’s actually happening behind the scenes.

The LinkedIn Post That Started the Controversy

On December 23, 2025, Galen Hunt published what appeared to be a company-wide initiative on LinkedIn. His original statement read: “My goal is to eliminate every line of C and C++ from Microsoft by 2030. Our strategy is to combine AI and Algorithms to rewrite Microsoft’s largest codebases.” The post repeatedly used “our,” suggesting this was corporate policy.

Hunt also outlined a “North Star” goal of achieving “1 engineer, 1 month, 1 million lines of code” using AI and algorithms. Most readers interpreted this as Microsoft planning a complete Windows rewrite in Rust, a memory-safe alternative to C and C++. The announcement generated immediate backlash on tech forums and social media platforms.

What Microsoft Actually Said About the Claims

Frank X. Shaw, Microsoft’s head of communications, told media outlets on December 24 that the company has “no plans” to rewrite Windows 11 using AI and Rust. Microsoft explicitly denied the ambitious rewrite scenario that Hunt’s post had suggested.

Galen Hunt himself edited the LinkedIn post shortly after, writing: “It appears my post generated far more attention than I intended… with a lot of speculative reading between the lines. Just to clarify… Windows is NOT being rewritten in Rust with AI.” He explained his team’s work is purely research-focused, not a product strategy for Windows 11 or beyond.

Aspect	Details
Original Claim	Eliminate all C/C++ code by 2030 using AI rewriting
Actual Status	Research project to enable language migration technology
Windows Impact	No plans to rewrite Windows using this technology
Target Audience	Engineers joining Hunt’s Future of Scalable Software Engineering team

Understanding the Research Project Behind the Claims

The confusion stems from legitimate research within Microsoft’s CoreAI group. Galen Hunt’s team is genuinely exploring how AI can assist in translating code between programming languages at scale. The job posting was seeking engineers to build infrastructure for this translation work.

Hunt clarified that his team uses Rust as a demonstration target, not necessarily as the endpoint for all Microsoft code. “We are building tech to make migration from language to language possible,” he wrote in his edited post. The research aims to show how AI-powered tools could help developers move large codebases from one language to another efficiently.

“My team’s project is a research project. We are building tech to make migration from language to language possible. The intent of my post was to find like-minded engineers to join us on the next stage of this multi-year endeavor—not to set a new strategy for Windows 11+.”

— Galen Hunt, Microsoft Distinguished Engineer

Why Microsoft is Genuinely Exploring AI-Powered Code Translation

Memory safety concerns are driving industry-wide interest in languages like Rust. Research from Google and Microsoft shows approximately 70% of security vulnerabilities stem from memory safety issues in C and C++. Microsoft CEO Satya Nadella recently stated that the company already uses AI to write roughly 30% of its new code, with that percentage expected to increase significantly by 2030.

However, AI-generated code carries new risks. Research by CodeRabbit reveals that AI-written code typically contains more issues than human-written code. Despite these concerns, major tech firms continue investing in AI-powered development tools. Microsoft’s research team is betting that combining AI with advanced algorithms could overcome current limitations.

Will This Research Ever Impact Windows Users?

While Microsoft denies immediate plans to rewrite Windows using this technology, the research suggests long-term thinking about code modernization. The 5-year timeline Hunt mentioned aligns with Microsoft’s broader strategy of integrating AI throughout its development process. However, any actual implementation would require extensive testing and validation before affecting shipping products like Windows 11.

The episode highlights the challenge of communicating research efforts at major tech companies. Hunt’s original post, while technically describing research, used language that naturally invited interpretation as a corporate mandate. As Microsoft continues exploring AI-assisted development, clearer communication about what’s research versus what’s actual product roadmap will likely become essential to managing expectations and community concerns.

Sources

• Windows Latest – Microsoft’s direct denial of rewriting Windows with AI
• Slashdot – Coverage of engineer’s clarification statement
• CIO.com – Analysis of Microsoft’s research project scope