Any client machine running .NET requires a .NET runtime. The OpenEdge installer does not include the option to install a .NET runtime. You must ensure that the .NET runtime is installed. You can install either .NET Framework 4.8 or .NET. See the OpenEdge 13 Platform Compatibility Guide for information on which .NET versions are supported with OpenEdge.

By default, the AVM only loads the .NET Runtime (CLR) or .NET assemblies as the OpenEdge tools or a running .NET application require them. This behavior avoids wasting resources running unnecessary code. If your session definitely requires .NET, consider using the Preload CLR (-preloadCLR) startup parameter to force the CLR and any specified assemblies to load at startup. For more information on -preloadCLR, see Startup Command and Parameter Reference.

Running a .NET application on a client machine without a .NET runtime produces an error.