We are trying to set Like from our App Part in High Trust Provider-Hosted App and it is failing with the following error:
Call: Microsoft.Office.Server.ReputationModel.Reputation.SetLike(clientrContext, ListId.ToString(), 1, true);
Error: {"The assembly Microsoft.SharePoint.Portal.Proxy, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c does not support app authentication."}
Anyone has experience with those? Any workarounds? Appreciate any help.
Paul Shkurikhin blog.sharepointalist.com