Net Framework 4.7 2 Windows 7 Certificate Chain Error ^new^ -

When your .NET 4.7.2 app on Windows 7 tries to validate a certificate (say, for HTTPS, a signed ClickOnce manifest, or a WCF service), it builds a chain of trust. It looks for the in the machine’s store. But many modern roots (like Let’s Encrypt R3, or newer DigiCert roots) aren’t there. Windows 7 never got the background update. Worse still, if the cert uses SHA-256 (which is standard now) but the OS mistakenly tries SHA-1 compatibility first—failure.

Sin-D. 9,030 • Microsoft External Staff • Moderator. Nov 8, 2025, 9:24 PM. Hi XosaTag 975, Thanks for reaching out to Microsoft Q& Microsoft Learn net framework 4.7 2 windows 7 certificate chain error

: Provides the D3DCompiler_47.dll , which is a prerequisite for .NET 4.7.x. 3. Verify System Date and Time When your

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Windows 7 (especially original RTM or early SP1 builds) lacks updated root certificates that modern Microsoft installers rely on. .NET Framework 4.7.2 is signed using a SHA-2 certificate chaining to a root that may not be present or trusted on older Windows 7 systems.