There is no separate download link 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.
A window will pop up showing your current version (it should start with 5.0.xxxx). 2. Repair and Re-register the Installer Windows Installer 5.0 Download For Windows 10 64-bit
Remember: When it comes to core system components, trust only Microsoft’s official update channels. No third-party “download” will fix your problem—but it might create new ones. There is no separate download link for Windows Installer 5
Official reference: Microsoft documentation confirms that Windows Installer 5.0 is an OS component for Windows 10 and later, not a downloadable feature. Always verify software downloads through support.microsoft.com. Windows Installer 5.0 Download For Windows 10 64-bit
"This setup requires Windows Installer 5.0. Please download Windows Installer 5.0 for Windows 10 64-bit."