A window will pop up showing the version number (it should start with ). Troubleshooting Windows Installer Issues

Go to Settings > Update & Security > Windows Update and click Check for updates . This ensures you have the latest stable build of the installer service.

There is for Windows Installer 5.0 on Windows 10 64-bit because it is built directly into the operating system . Unlike older versions (4.5 and earlier), Microsoft does not offer a standalone "redistributable" package for version 5.0.