You might have accidentally downloaded the "web installer" (usually ~1.2 MB). The genuine offline installer (68 MB) will not request a connection. Double-check your filename.
To install .NET Framework 4.5.2 on Windows 7, your system must meet these specific criteria: Operating System: Service Pack 1 (SP1) net framework 4.5 2 offline installer for windows 7
The .NET Framework is a software framework developed by Microsoft that provides a large library of pre-built functionality, security features, and a virtual execution environment for software applications. It is a essential component for running many modern Windows applications and games. You might have accidentally downloaded the "web installer"
Windows 7 reached End of Life (EOL) in January 2020. Microsoft’s update servers for Windows 7 are now either turned off, throttled, or hidden behind WSUS (Windows Server Update Services) paywalls. To install
“You’re not going to believe this,” Mira said. “But I have it. We keep a repository of legacy runtimes for our ancient student registration system. It’s on an FTP server that hasn’t been updated since the Obama administration.”