Error 2 Error occurred in deployment step 'Activate Features': System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.SharePoint.WorkflowServices.WorkflowSubscriptionStorageEventReceiver.ItemUpdating(SPItemEventProperties properties) 0 0

This error occurred when i try to deploy a visual studio workflow to the SharePoint. By checking the ULS i got the following error as well

Can't find WorkflowServiceProxy or its service application proxy type name is null

To overcome this error we need to install and configure the workflow manager.

Reference: http://prabathf.blogspot.com/2013/02/installing-and-configuring-workflow-for.html

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