Operation returned an invalid status code 'unauthorized' on azure cognitive

Question

I have download this code from official microsoft cognitive github repository:

https://github.com/Azure-Samples/cognitive-services-dotnet-sdk-samples/tree/master/samples/ComputerVision/OCR

using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;

namespace Microsoft.Azure.CognitiveServices.Samples.ComputerVision.BatchReadFile
{
    using Microsoft.Azure.CognitiveServices.Vision.ComputerVision;
    using Microsoft.Azure.CognitiveServices.Vision.ComputerVision.Models;

    class Program
    {
        static void Main(string[] args)
        {
            // Add your Computer Vision subscription key and endpoint to your environment variables
            string subscriptionKey = "my key0001"; // Environment.GetEnvironmentVariable("my key0001");
            string endpoint = "https://controllo.cognitiveservices.azure.com/"; // Environment.GetEnvironmentVariable("https://controllo.cognitiveservices.azure.com/");

            try
            {
                BatchReadFileSample.RunAsync(endpoint, subscriptionKey).Wait(5000);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }

            Console.WriteLine("\nPress ENTER to exit.");
            Console.ReadLine();
        }
    }
    public class BatchReadFileSample
    {
        public static async Task RunAsync(string endpoint, string key)
        {
            ComputerVisionClient computerVision = new ComputerVisionClient(new ApiKeyServiceClientCredentials(key))
            {
                Endpoint = endpoint
            };
            const int numberOfCharsInOperationId = 36;

            // string localImagePath = @"Images\handwritten_text.jpg";  // See this repo's readme.md for info on how to get these images. Alternatively, you can just set the path to any appropriate image on your machine.
            string localImagePath = @"C:\Users\marco.panza\OneDrive - Accenture\Desktop\Sorgenti\OCR C#\info.png";

           // string remoteImageUrl = "https://github.com/Azure-Samples/cognitive-services-sample-data-files/raw/master/ComputerVision/Images/printed_text.jpg";

            Console.WriteLine("Text being batch read ...");
             await BatchReadFileFromStreamAsync(computerVision, localImagePath, numberOfCharsInOperationId); 
           // await BatchReadFileFromUrlAsync(computerVision, remoteImageUrl, numberOfCharsInOperationId);
        }

        // Read text from a remote image
        private static async Task BatchReadFileFromUrlAsync(ComputerVisionClient computerVision, string imageUrl, int numberOfCharsInOperationId)
        {
            if (!Uri.IsWellFormedUriString(imageUrl, UriKind.Absolute))
            {
                Console.WriteLine("\nInvalid remote image url:\n{0} \n", imageUrl);
                return;
            }

            // Start the async process to read the text
            BatchReadFileHeaders textHeaders = await computerVision.BatchReadFileAsync(imageUrl);
            await GetTextAsync(computerVision, textHeaders.OperationLocation, numberOfCharsInOperationId);
        }

        // Recognize text from a local image
        private static async Task BatchReadFileFromStreamAsync(ComputerVisionClient computerVision, string imagePath, int numberOfCharsInOperationId)
        {
            if (!File.Exists(imagePath))
            {
                Console.WriteLine("\nUnable to open or read local image path:\n{0} \n", imagePath);
                return;
            }

            using (Stream imageStream = File.OpenRead(imagePath))
            {
                // Start the async process to recognize the text
                BatchReadFileInStreamHeaders textHeaders = await computerVision.BatchReadFileInStreamAsync(imageStream);
                await GetTextAsync(computerVision, textHeaders.OperationLocation, numberOfCharsInOperationId);
            }
        }

        // Retrieve the recognized text
        private static async Task GetTextAsync(ComputerVisionClient computerVision, string operationLocation, int numberOfCharsInOperationId)
        {
            // Retrieve the URI where the recognized text will be
            // stored from the Operation-Location header
            string operationId = operationLocation.Substring(operationLocation.Length - numberOfCharsInOperationId);

            ReadOperationResult result = await computerVision.GetReadOperationResultAsync(operationId);

            // Wait for the operation to complete
            int i = 0;
            int maxRetries = 10;
            while ((result.Status == TextOperationStatusCodes.Running ||
                    result.Status == TextOperationStatusCodes.NotStarted) && i++ < maxRetries)
            {
                Console.WriteLine("Server status: {0}, waiting {1} seconds...", result.Status, i);
                await Task.Delay(1000);
                result = await computerVision.GetReadOperationResultAsync(operationId);
            }

            // Display the results
            Console.WriteLine();
            var recResults = result.RecognitionResults;
            foreach (TextRecognitionResult recResult in recResults)
            {
                foreach (Line line in recResult.Lines)
                {
                    Console.WriteLine(line.Text);
                }
            }
            Console.WriteLine();
        }
    }
}

but I get this error:

One or more errors occurred. (Operation returned an invalid status code 'Unauthorized')

the key and end point are correct (I have posted a pseudo key for security reasons).

The first time I have tried with this code:

string subscriptionKey = Environment.GetEnvironmentVariable("my key0001");
 string endpoint = Environment.GetEnvironmentVariable("https://controllo.cognitiveservices.azure.com/");

but these string return null and after I have tried to assigh directly the value:

string subscriptionKey = "my key0001");
 string endpoint = "https://controllo.cognitiveservices.azure.com/);

and I get this error:

"One or more errors occurred. (Operation returned an invalid status code 'Unauthorized')"

can someone help me please?

Answer 1

Pls make sure that you have created a current type of cognitive service, I recommend you to create All Cognitive Services just as below:

You can follow this doc to create it(Multi-service resource).

I did some test on my side by this service and everything works for me as expected:

My local test image:

Result: