Windows 7 is missing modern root certificates, meaning it cannot validate Microsoft’s digital signature on the installer file.
It allows you to keep a permanent backup copy of the software for legacy system restores. Prerequisites for Windows 7 (64-Bit)
Download the official executable package directly from the Microsoft Download Center. The file name is typically dotNetFx45_Full_x86_x64.exe and is approximately 48 MB in size. Step 3: Run the Setup File Right-click the downloaded installer file. Windows 7 is missing modern root certificates, meaning
4.5.2 (Recommended) — This is the most compatible version within the 4.5 family and serves as a direct update to 4.5 and 4.5.1. Download: Microsoft .NET Framework 4.5.2 Offline Installer .
: An alternative offline package (66.8 MB). The file name is typically dotNetFx45_Full_x86_x64
Alternatively, open regedit and navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full If the Release DWORD value is , .NET 4.5 is correctly installed.
reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full" /v Release Use code with caution. Download: Microsoft
Given the support situation for Windows 7, installing the latest is the best practice. You may need to install a couple of prerequisite updates first, but it provides the most comprehensive support.