Reinstall Visual C++ Redistributables. Download “VC_redist.x64.exe” from Microsoft’s official page (2015-2022 version).
Planet Zoo officially supports as a minimum requirement, so you can indeed download and play it on that operating system. 🐾 Minimum Requirements for Windows 7 Planet Zoo Download For Windows 7
Frontier’s own launcher is lightweight and compatible with Windows 7. Reinstall Visual C++ Redistributables
Once the download finishes, attempt to launch the game to identify specific error codes. Troubleshooting Tips for Older Systems Planet Zoo Download For Windows 7