Microsoft will showcase a session at Build 2026 focused on porting x86 applications to Windows on Arm using AI agents. This initiative is in collaboration with NVIDIA, introducing the RTX Spark chip designed for Windows on Arm, which enhances performance for native Arm applications. Microsoft reports that 90% of user activity on Windows on Arm PCs involves natively compiled applications. The session will explore the use of agentic AI to assist developers in automating coding tasks and improving efficiency. A resource called "Works on WoA" helps users check application compatibility, while the Prism emulation layer allows access to a wide range of apps on Arm systems, though some legacy and specialized applications may face issues. The session, led by Qualcomm's Gaurav Goel, will provide tools for developers and is scheduled for June 3 at 6:20 PM ET.