Installing Windows 10 on a Mac using Boot Camp Support Software 4.0.4033 is a specialized task typically reserved for older Intel-based Macs (roughly from the 2011–2012 era) that require specific 32-bit or legacy drivers.

Core cause: The macOS APFS/HFS+ container has unmovable files (e.g., local Time Machine snapshots, large cache files, or firmware updates) blocking the shrink operation required for Bootcamp.

Open Device Manager in Windows.
Expand System devices.
Find Apple Boot Camp or Apple SSD SM… Controller.
Right-click > Properties > Driver tab. Check the driver provider is Apple Inc. and the digital signer.

2. Disable "Fast Startup" in Windows

Fast Startup can prevent your Mac from properly mounting the macOS drive when rebooting.

Congratulations! You have successfully installed Windows 10 on your Mac using Boot Camp 40 4033. You can now switch between macOS and Windows 10 by restarting your Mac and holding down the Option (⌥) key.

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