private static string GetAadGroupNameById(string groupId) { string groupName = null; var graphClient = new GraphClient("https://graph.windows.net/85c96496-fbc6-4bf3-bfcc-fb51ca874527"); try { var groupNameTask = Task.Run(() => graphClient.GetGroupNameByIdAsync(groupId));//"29f4bef8-80bb-4afd-835f-16b3e0dbb537" groupName = groupNameTask.Result; } catch (Exception exception) { // look for specific exception in Graph Client library if groupId not found. } return(groupName); }