This error usually appears when trying to install WMF 5.1. It happens if you do not have Service Pack 1 installed. Ensure your Windows 7 is fully updated up to the end-of-life date. It can also happen if you try to install an x86 package on an x64 system (or vice versa).
In the landscape of Windows operating systems, Windows 7 remains a beloved classic. Even though Microsoft officially ended support for the OS in January 2020, a significant number of users still rely on it for legacy software, industrial applications, or personal preference. However, managing a Windows 7 machine today requires robust tools, and none are more essential than PowerShell. Windows Powershell Download Windows 7 64 Bit