4.8.5.2 - Arnold for Cinema 4D

23 January 2026

C4DtoA 4.8.5.2 uses Arnold 7.4.4.2 and is a bugfix release. For the full list of features in C4DtoA 4.8.5, see the C4DtoA 4.8.5 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.

ARNOLD-16335 - Rare crash during node update when using cryptomatte
ARNOLD-16739 - Global Light Sampling is not correctly enabled in certain cases in IPR
ARNOLD-16815 - DeepEXR driver hangs with certain invalid samples
ARNOLD-16945 - Fix rare crash when loading some USD files
ARNOLD-17173 - Conflicting MaterialX definitions for convert shaders cause random failures
ARNOLD-17193 - No path mapping on OSL textures if texture_use_existing_tx is turned off
ARNOLD-17195 - Crash when interactively replacing a procedural with an empty file
ARNOLD-17206 - Crash when node does not have an AtNodeEntry
ARNOLD-17296 - Crash when there are multiple non-simple imager_lens_effects nodes
usd#2509 - Fix crash in Solaris when changing the rendered LOP interactively
usd#2514 - Fix random inconsistencies between instantaneousShutter and ignore_motion_blur in hydra

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 11 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 580.95.05 or higher drivers.
- On Windows, we recommend 581.42 or higher drivers.
Intel OIDN GPU support is limited to:
- macOS
  - Apple native CPUs (M1 and newer)
- Linux
  - NVIDIA GPUs using Turing or newer architectures
- Windows
  - Intel Xe dedicated and integrated GPUs
  - NVIDIA GPUs using Turing or newer architectures
  - AMD GPUs with RDNA2 (Navi 21 only) and RDNA3 (Navi 3x) architectures