You are trying to install on a machine with no internet connection.
The most direct solution is to manually download and add the required Microsoft Root Certificate to your system's trusted store. Step 1: Download the Microsoft Root Certificate
Windows 7 must have Service Pack 1 (SP1) installed.
Download the official from the Microsoft website instead of using the standard web stub. Disconnect your computer from the internet temporarily. net framework 4.7 2 windows 7 certificate chain error
.NET Framework 4.7.2 applications running on Windows 7 can encounter certificate chain validation errors when establishing TLS/SSL connections. This paper explains root causes (OS crypto/Trust Store limitations, missing updates, deprecated signature algorithms, intermediate certificate issues, and SChannel behavior), demonstrates reproducible scenarios, and provides practical mitigations for developers and sysadmins, including patching, certificate replacement, registry/SChannel tweaks, and code-level workarounds. Recommendations prioritize security and compatibility.
Download the modern Microsoft Root Certificate (usually DigiCert Trusted Root G4 or Microsoft Root Certificate Authority 2011 ).
This method updates the necessary security components in the correct order to make Windows 7 SHA-2 compliant. You are trying to install on a machine
The most effective fix is to manually import the trusted root certificate that the installer is looking for.
Method 2: Install Windows 7 SHA-2 Code Signing Support Updates
But this should be used for troubleshooting — it weakens security. Download the official from the Microsoft website instead
Modern installers are signed using SHA-2, which Windows 7 did not natively support at launch. Install KB3004394
The .NET Framework 4.7.2 certificate chain error on Windows 7 is a common roadblock . It usually happens because the system lacks the modern certificates or updates needed to verify Microsoft's digital signatures.
Restart your computer and attempt to install .NET 4.7.2 again.
Here’s a technical write-up explaining the — including why it happens, typical error messages, and how to resolve it.