Open PowerShell as Administrator and run:
Install the via the Visual Studio Installer. download+install+windows+workflow+foundation+version+3042032
This is the easiest and most up-to-date method. Starting with Visual Studio 2017 and later, you can install the Windows Workflow Foundation component directly through the Visual Studio Installer. This method ensures that the workflow designer, templates, and all necessary dependencies are correctly set up within your Visual Studio environment. Open PowerShell as Administrator and run: Install the
Guide to Accessing and Using Legacy Windows Workflow Foundation (WF 3.0 / 3.5) download+install+windows+workflow+foundation+version+3042032