Download the file, verify its signature, and install it via "Run as Administrator". Once installed, reboot immediately. Your Windows system will thank you with smoother installations and fewer "1603" or "1612" MSI errors. Have you successfully installed Msi 4.240.15.6305 from Filepuma? Did you encounter any unique errors? Perform a quick verification using msiexec /? in Command Prompt to confirm the update took hold.

Open your web browser and go to www.filepuma.com . Use the search bar at the top right.

Once the file is saved (e.g., WindowsInstaller-KB971033-x86.exe or a similar naming pattern), right-click it, go to Properties > Digital Signatures . It should be signed by Microsoft Windows or Microsoft Corporation . If it is not signed, delete it immediately and re-download. Installation Guide for Msi 4.240.15.6305 Installing a Windows Installer update is slightly different from installing a normal app because it updates a core OS service.