Hello everyone, We have been using Mozilla Firefox ESR (32-bit) in the organization for several years. For installation on our clients, we use "Matrix42 Empirum" as the software distribution tool. All it does is install the MSI of Firefox. However, for quite some time now (almost 2 years), we have been facing an issue where some installations are marked as successful (Error code 0), but once the MSI installer is automatically closed, files like "firefox.exe" disappear from the installation directory – despite the installation being marked as successful. The problem doesn’t always occur, but a repair attempt usually resolves the issue. In addition to Empirum, we also use Defender for Endpoint, but we couldn’t find any clues there. Is this problem known, or are we the only ones experiencing it?