Update window first if you did not update before.
Go to this link” https://go.microsoft.com/?linkid=9737537”
to download Web Platform Installer 5.0.
Install Web Platform Installer 5.0
Open Web Platform Installer 5.0
Type Workflow Manager
on top right hand.
Click Add on the Workflow manager 1.0 Refresh (CU2) and
Click Install.
Click I Accept
Check the I don’t Want to...