If you are running and the framework is corrupted or missing, you can download the full redistributable package from the Microsoft Download Center.
If you are deploying to offline machines (no internet), you should skip 4.5.2 and install , the final version of the legacy .NET Framework. net framework 52 offline installer
.NET Framework 3.5 Offline Installer
https://dotnet.microsoft.com/en-us/download/dotnet/5.0 → Look for "Run apps - Runtime" → choose x64 or x86 → Download binary or Installer If you are running and the framework is
: Close any open programs to prevent file-locking conflicts. you should skip 4.5.2 and install