If the Windows 7 machine has no internet access or outdated roots:
Certificate chain errors for .NET Framework 4.7.2 on Windows 7 are typically caused by OS-level cryptographic and trust store limitations, missing intermediates, or incompatible certificate algorithms. The safest long-term fixes are OS updates and correcting server certificate chains; code-level bypasses should be avoided except for controlled diagnostics. net framework 4.7 2 windows 7 certificate chain error
For Windows 7, Microsoft historically provided a standalone Root Certificates Update utility (rootsupd.exe). While no longer officially hosted on Microsoft's main site, you can find trusted copies from reputable archives (ensure SHA-2 signature matches). If the Windows 7 machine has no internet
Steps:
This was the go-to method for Windows XP and Server 2003 era, but it often resolves Windows 7 issues as well. This was the go-to method for Windows XP