Server-side activities have been updated. you need to restart sharepoint designer to use the updated version of activities

"Server-side activities have been updated. you need to restart sharepoint designer to use the updated version of activities"

This is the error that occurs when creating a workflow using sharepoint designer 2013.


Solution:

Uninstall Workflow Manager Client 1.0 resolved the issue.

Go to Programs and Features and uninstall the Workflow Manager Client 1.0.