SharePoint Designer - SharePoint workflow 2013 - Server-side activities have been updated -fix

Resolution Steps:

 

Perquisites:

SharePoint Designer 2013 is installed:

https://www.microsoft.com/en-gb/download/details.aspx?id=35491

 

Step 1:

Service Pack 1 for Microsoft SharePoint Designer 2013 (KB2817441) 64-Bit Edition

https://www.microsoft.com/en-us/download/confirmation.aspx?id=42009

 

Step 2:

2016 Update for Microsoft SharePoint Designer 2013 (KB3114721) 64-Bit Edition

https://www.microsoft.com/en-us/download/details.aspx?id=53389