When I try to open a workflow using Designer 2013. I get the error "Unable to load workflow actions from the server. Please contact your server administrator".
I did a lots of digging and not able to find a good solution for this.
One option was to see if there's a solution deployed in both the farm level and site collection level. But there's nothing.
I checked the logs but I'm not really sure what I'm looking for. Can anybody help me?