Technically yes, but it is unnecessary. Windows 10 and 11 come with higher versions (4.7.2 or 4.8) pre-installed. Installing 4.5.2 on a modern OS may cause side-by-side conflicts, though rare. Stick to the Windows 7 target.

After rebooting, verify that .NET Framework 4.5.2 is fully operational:

  • Run a simple test: Create a text file called test.cs with using System; class Test static void Main() Console.WriteLine("OK"); . Compile with csc test.cs from a Developer Command Prompt. If it compiles, you are done.

    • Microsoft still hosts the offline installer:

    ⚠️ This is the bootstrapper – it still requires internet to download the full package unless you get the full standalone version.

    For a truly offline installer (all files included), use: