4.9.3.1

10 August 2026

Arnold for Cinema 4D 4.9.3.1 is a bugfix release using Arnold 7.5.3.1. For the full list of features in Arnold for Cinema 4D 4.9.3, see the Arnold for Cinema 4D 4.9.3 release notes.

Installation

Download Arnold for Cinema 4D from your Autodesk Account. See Download Arnold for more information about downloading C4DtoA from your Autodesk Account.
Follow these installation instructions.

C4DTOA-3595 - IPR does not update sometimes when changing imager parameters
C4DTOA-3600 - IPR sometimes restarts when changing imagers
ARNOLD-17791 - Alembic node doesn't support setting user data, such as interior_set
ARNOLD-17804 - Crash when using non-UTF8 strings
ARNOLD-18131 - GPU stats missing in direct_outputs mode
ARNOLD-18134 - Use-after-free crash in AtUniverse's scene initialize when nodes are destroyed mid-traversal
ARNOLD-18162 - Hang when scene is being destroyed
ARNOLD-18171 - spot_light roundness combined with cosine_power causes NaNs
ARNOLD-18190 - Variance filter can emit NaN/Inf for the Z AOV

Windows 10 or later, with the Visual Studio 2019 redistributable.
Linux with at least glibc 2.28. This is equivalent to RHEL/Rocky 8.
macOS 12 or later.
x86-64 CPUs need to support the SSE4.1 instruction set. Apple Mac models with M series chips are natively supported.
GPU rendering and OptiX denoising work on Windows and Linux only, and require an NVIDIA GPU with the Maxwell architecture or later.
- On Linux, we recommend 590.48 or higher drivers.
- On Windows, we recommend 591.28 or higher drivers.
Intel OIDN runs on all CPUs. GPU support is limited to:
- macOS
  - Apple silicon GPUs (M1 and newer)
- Linux
  - NVIDIA GPUs with Turing, Ampere, Ada Lovelace, Hopper, and Blackwell architectures
- Windows
  - Intel Xe and Intel Arc dedicated and integrated GPUs
  - NVIDIA GPUs with Turing, Ampere, Ada Lovelace, Hopper, and Blackwell architectures
  - AMD GPUs with RDNA 2, RDNA 3, RDNA 3.5, and RDNA 4 architectures