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(This post is meant to serve as an update to the prior post in December 2017)   To provide as much information and transparency as possible, we held several webinars on February 15th and February 21st to provide updates to clients across multiple markets on the status of changes to the New Box View service (recording available here). 

Hello.   May be someone can help me. I have a LTI token from a blackboard site and C#, I have the secret and all inputs. But I can´t validate it. I'm using OAuthUtility CodePlex Archive downloaded from Nuget.   request.HttpMethod is POST   string signatureBase = OAuthUtility.GenerateSignatureBase(request.HttpMethod,