Hello @lubear zh ,
Welcome to Microsoft Q&A forum.
In Visual Studio Installer, did you click
Modify and then switch to
Individual components tab? After you search
workflow foundation, you should see the
Windows Workflow Foundation component(Install Windows Workflow Foundation).
Windows Workflow Foundation doesn't appear on your side in VS Installer, please try to navigate to
C:\Program Files (x86)\Microsoft Visual Studio\, back up the Installer folder, rename it. Download a new bootstrapper file from here: Downloads, double click to run it and wait for VS Installer to finish installing. Restart VS Installer and check again.
Feel free to let us know the results.
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