The standard "web installer" is a tiny file that downloads components during the installation process. If the connection drops, the install fails.
.NET 4.5.2 will not install on "RTM" (original) Windows 7. You must have SP1 installed. net framework 4.5 2 offline installer for windows 7
Getting the .NET Framework 4.5.2 Offline Installer for Windows 7 The standard "web installer" is a tiny file
If you are running older software or developing applications on Windows 7, you’ll likely run into a prompt requiring . While newer versions exist, 4.5.2 remains a critical "highly compatible" update for the .NET 4 family. You must have SP1 installed
Ensure your system has the latest root certificates. If the installer hangs at "Verifying digital signature," it’s often because the OS doesn't recognize the modern security certificates used by Microsoft. How to Download and Install
Even if not prompted, a reboot is highly recommended to ensure the new libraries are correctly registered. Troubleshooting Common Issues