Short answer: Yes, but not by default.
Microsoft officially deprecated 3D Builder in late 2024. When you perform a clean installation of Windows 11 (versions 23H2 and newer), the app is no longer pre-installed. Microsoft replaced its focus with the "Paint 3D" app and integrated basic 3D viewing into the Photos app. 3d builder windows 11
However, for the millions of hobbyists who own 3D printers, removing 3D Builder entirely was an unpopular move. The app is still available via the Microsoft Store, but you must act quickly—Microsoft has warned it may remove the listing entirely by the end of 2026. Short answer: Yes, but not by default
The automatic repair tool remains the app’s killer feature. Load a faulty STL file, click “Repair,” and 3D Builder often fixes holes, inverted normals, and disconnected shells in seconds. For free software, it outperforms some paid repair tools. Once installed, it runs natively on Windows 11
Microsoft stopped developing 3D Builder years ago, and it is no longer pre-installed. However, they haven't killed it completely.
Once installed, it runs natively on Windows 11 (both x64 and ARM devices usually handle it fine).