Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319

A subset of the framework optimized for client applications, allowing for faster deployments and smaller footprints.

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Press Windows Key + R , type %temp% and press Enter. Delete all files in this directory.

Right-click the installer, go to Properties , and if there is an "Unblock" button at the bottom, click it before running the file. Step 4: Update Root Certificates

Always use official offline installers rather than web installers. Web installers rely on outdated Windows Update servers that may no longer handshake correctly with Windows 7.

Follow these methods in order to resolve the error and complete your .NET Framework installation. 1. Install Required SHA-2 Code Signing Support Updates

Delete all files and folders found inside the directory.

: Windows 7 originally used SHA-1, which is now deprecated.

HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client Version = 4.0.30319.269 (or higher)

64-bit applications are optimized for better memory management.