{"type":"post","id":"mujoco-4-0-1-enables-studio-web-viewer-7afbbf","slug":"mujoco-4-0-1-enables-studio-web-viewer-7afbbf","title":"MuJoCo 4.0.1 enables Studio Web Viewer on Windows and fixes a sparse Cholesky bug","description":"Google DeepMind released MuJoCo 4.0.1 on November 11, 2026, adding Windows support for the MuJoCo Studio Web Viewer and fixing a sparse Cholesky factorization bug introduced in 4.0.0.","retrieval_nugget":"Google DeepMind released MuJoCo 4.0.1 on November 11, 2026, adding Windows support for the MuJoCo Studio Web Viewer and fixing a sparse Cholesky factorization bug introduced in 4.0.0. The patch matters most to simulation teams using sparse constraints, where the defect could produce slow convergence, incorrect accelerations or divergence.","published_at":"2026-11-14","updated_at":"2026-11-14","record_date":"2026-11-14","date_kind":"published_at","topics":["google"],"entities":["Google DeepMind","MuJoCo","MuJoCo Studio"],"related_patterns":[],"novelty_label":"new_fact","what_changed":"MuJoCo 4.0.1 adds Windows support for the Studio Web Viewer and fixes a sparse Cholesky bug.","prior_refs":["https://newruntime.com/posts/mujoco-4-0-released-with-studio-viewer-filament-cc6d68/"],"source_url":"https://github.com/google-deepmind/mujoco/releases/tag/4.0.1","source_urls":["https://github.com/google-deepmind/mujoco/releases/tag/4.0.1"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:mujoco-4-0-1-enables-studio-web-viewer-7afbbf","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/mujoco-4-0-1-enables-studio-web-viewer-7afbbf/","markdown":"https://newruntime.com/posts/mujoco-4-0-1-enables-studio-web-viewer-7afbbf.md","json":"https://newruntime.com/posts/mujoco-4-0-1-enables-studio-web-viewer-7afbbf.json"},"markdown_url":"https://newruntime.com/posts/mujoco-4-0-1-enables-studio-web-viewer-7afbbf.md","next_reads":[{"type":"topic","path":"/topics/google/","url":"https://newruntime.com/topics/google/","title":"Google","reason":"Explore the google topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/google.md","json_url":"https://newruntime.com/topics/google.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}