The absolute best way to ensure your download is genuine and untampered with is to check its digital signature or hash value.

Running a 2017 application on modern operating systems like Windows 11 can occasionally trigger bugs. The "Checkup" Error

SketchUp 2017 Make does not natively run on modern macOS versions (like macOS Monterey, Ventura, or Sonoma) due to the removal of 32-bit/older framework support and the transition to Apple Silicon (M1/M2/M3 chips). Mac users should stick to the web-based version or use a Windows virtual machine. Step-by-Step Installation Guide

As of 2026, Trimble (the developer) only provides official downloads for the last two major versions

Windows 7, 8, 10, or 11 (64-bit required; 32-bit is not supported); macOS 10.10 (Yosemite) through macOS 10.14 (Mojave). Processor: 2 GHz or faster Intel or AMD processor. RAM: 4 GB minimum (8 GB or more recommended).

It still runs great! Just use "Compatibility Mode" if you hit any snag.