In the tab, select Windows 10 compatibility mode .
Cinema 4D R19 does not officially support Windows 11. Maxon built R19 for Windows 10, macOS Sierra, and High Sierra. However, the application can run on Windows 11 with the right configurations. Known Issues
: If you need to download Content Browser libraries, you can temporarily disable the rule while C4D is already running, though it is recommended to keep it blocked for stability. Update Build : Ensure you are on at least
Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\File Dialogs] "LegacyFileDialog"=dword:00000001