System.configuration.configurationmanager Version 4.0.1.0 _verified_ Info

Consider a complex solution where:

Azure Functions (particularly older v3 apps or those running on the App Service plan) often rely on specific versions of configuration libraries. Because the Azure environment controls the host process, mismatching versions between your local bin folder and the Azure runtime can trigger errors asking specifically for 4.0.1.0 . system.configuration.configurationmanager version 4.0.1.0

: Applications that use both modern and legacy .NET technologies often require this specific assembly version to ensure that shared libraries can resolve configuration dependencies correctly. system.configuration.configurationmanager version 4.0.1.0