Mozilla provides official links for downloading full MSI packages for various release channels:
How to Download and Use the Firefox Offline Installer (MSI) For most users, the standard Firefox download provides a "stub" installer—a tiny file that downloads the actual browser data during the installation process. However, if you need to install the browser on a machine without internet access or deploy it across a corporate network, you need the . 1. Where to Download the Firefox MSI Installer download firefox offline installer msi
While both files result in the same browser, the format is built for professional environments: Use Firefox as your enterprise browser Mozilla provides official links for downloading full MSI
Use the Firefox Browser All Versions page and select "Windows MSI 64-bit" or "32-bit" from the dropdown menu. download firefox offline installer msi