Cinema 4D 2025.3+ Issues on Windows? Here's What Changed

Starting with Cinema 4D 2025.3, the minimum supported version of Windows is 22H2.

If you're using an older version of Windows, you'll need to update your system to run Cinema 4D 2025.3 and later. If updating isn’t an option, you can continue using Cinema 4D 2025.2 and earlier, which remain compatible with older Windows versions. However, we encourage you to review the system requirements for those versions as well, as they also have specific requirements.

You can find system requirements for earlier versions of Cinema 4D here:
Cinema 4D System Requirements 

You can find earlier installers for Cinema 4D here:
Where can I download the previously released updates/builds of Cinema 4D?