<configuration> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8" /> </startup> </configuration> This tells the app to run on a newer version. The .NET Framework 4.5.2 offline installer remains a valuable tool in the IT administrator's toolkit, not because it is new or modern, but because it represents a stable, well-understood foundation for legacy applications in isolated environments. With its 66 MB footprint, support for Windows Vista (for the truly legacy-bound), and silent installation capabilities, it solves real-world problems on factory floors, hospital information systems, and government networks that cannot reach the internet.

However, it is equally important to recognize its age. With extended support ended, using .NET 4.5.2 should be a conscious decision made for specific, unavoidable compatibility reasons—not a default choice. Whenever possible, upgrade to .NET Framework 4.8 or migrate to .NET 6/8.

NDP452-KB2901907-x86-x64-AllOS-ENU.exe /q /norestart