
Hi anonymous user
Indeed it appears to be a bug with de-serializing response payload.
Try using this code snippet instead:
var requestUrl = graphClient.Reports.GetOneDriveUsageAccountDetail("D180").Request().RequestUrl;
var request = new HttpRequestMessage(HttpMethod.Get, requestUrl);
await graphClient.AuthenticationProvider.AuthenticateRequestAsync(request);
var response = await graphClient.HttpProvider.SendAsync(request);
// Get the csv report data
var csvData = await response.Content.ReadAsStringAsync();
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