Most users download CapCut via the CapCut_WIN_web_installer.exe . This tiny file downloads the latest version in the background. So, why would anyone need the full .zip archive?
After installation, open the CapCut installation folder, find the resources\updater folder, and delete or rename update.exe . This prevents CapCut 3.9.0.1459 from automatically updating to a newer version. CapCut 3.9.0.1459.zip