.NET Framework 4.0 no longer supported

[pablo-msft]

https://github.com/microsoft/cpp_client_telemetry/blob/main/docs/cpp-start-windows.md#option-1-build-the-sdk-from-source-using-visual-studio
Open cpp_client_telemetry/Solutions/MSTelemetrySDK.sln in Visual Studio 2022 (note that 2022 is not on the prereqs list). Get pop-up:

[maxgolov]

Just right-click and unload the unsupported project. Those who still need it would open it would build with an older compiler. Toolchain version can be passed via the build script.