Because there are fake download sites out there, never download ZBrush from a torrent or third-party site. The official version is 100% free and safe via Maxon.

Step-by-Step Instructions:

System Requirements for 2025: Windows 10/11 (64-bit) or macOS 12+ (Intel or Apple Silicon). You need at least 4GB of RAM, though 8GB is recommended.

Fix: This is a Gatekeeper issue. Go to System Settings > Privacy & Security. Scroll down, and you will see a message about ZBrush Core Mini being blocked. Click "Open Anyway."

Fix: Maxon’s 2025 servers sometimes throttle. Pause the download for 10 seconds, then resume. Alternatively, use a download manager or try a different browser (Chrome works best).