When WebDriver tests started via Windows Remote Desktop session, the page screenshots become corrupted in Internet Explorer and show just a black screen.

Html2CanvasWebDriver.cs

/***************************************************************************************************
 * Alternative way to create full page screenshot via Selenium WebDriver with html2canvas.js
 * =========================================================================================
 *
 * When WebDriver tests started via Windows Remote Desktop session, 
 * The page screenshots become corrupted in Internet Explorer and 
 * show just a black screen. 
 * 
***************************************************************************************************/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
using OpenQA.Selenium.IE;

/***************************************************************************************************
Prerequisites:
    1. Create .NET C# project in Visual Studio
    2. Download html2canvas.min.js and include it into the project
       https://github.com/niklasvh/html2canvas/blob/master/build/html2canvas.min.js
    3. Mark in the VS  html2canvas.min.js properties, set “Copy to Output Directory = Copy if newer“
    4. Enjoy
***************************************************************************************************/


namespace Html2CanvasWebDriver
{
    class Program
    {
        static void Main(string[] args)
        {
            IWebDriver driver = new FirefoxDriver();
            //IWebDriver driver = new InternetExplorerDriver();

            driver.Navigate().GoToUrl("http://twitter.com");
            
            GetPageScreenshot(driver, "image01.png");

            driver.Navigate().GoToUrl("https://www.google.com.ua/search?client=opera&q=selenium%20webdriver");

            GetPageScreenshot(driver, "image02.png");

            driver.Navigate().GoToUrl("https://habrahabr.ru");

            GetPageScreenshot(driver, "image03.png");

        }

        private static void GetPageScreenshot(IWebDriver driver, string imageFileName)
        {
            var js = driver as IJavaScriptExecutor;

            var html2CanvasLib = File.ReadAllText(@"html2canvas.min.js");

            // * html2canvas.min.js is huge to keep it in code. 
            // * The lines bellow reads the original source and inject it to the 
            // * JavaScript Injection template

            string html2CanvasInjectionTemplate = string.Format
            (@"
                function injectHtml2Canvas()
                {{
                    {0}
                }}

                var script = document.createElement('script');
                script.appendChild(document.createTextNode('('+ injectHtml2Canvas +')();'));
                (document.body || document.head || document.documentElement).appendChild(script);

            ", html2CanvasLib);


            // * Checks if html2canvas.min.js already injected into the page. 
            // * Injects the source code if required
            string checkHtml2CanvasLoaded = @"return window.html2canvas != undefined;";

            bool isHtml2CanvasLoaded = Convert.ToBoolean(js.ExecuteScript(checkHtml2CanvasLoaded));

            if (!isHtml2CanvasLoaded)
            {
                js.ExecuteScript(html2CanvasInjectionTemplate);
            }


            // * Sends a command to html2canvas to create a webpage screenshot. 
            // * The screenshot data, encoded in Base64 will be stored into global variable 
            // * [[ window.Html2canvas_dataURL ]]
            string createScreenshotScript =
            @"
            
            window.html2canvas_dataURL = '';

            html2canvas(document.body, {
              onrendered: function(canvas) {
                          dataURL = canvas.toDataURL('image/png');
                          dataURL = dataURL.replace('data:image/png;base64,', '');
                          window.html2canvas_dataURL = dataURL;
              }
            });

            ";

            js.ExecuteScript(createScreenshotScript);

            // * This is async operation. So we have to wait until it is done.
            string getImageBase64Script = @"return window.html2canvas_dataURL;";
            string imageInBase64 = "";
            while (imageInBase64 == "")
            {
                imageInBase64 = js.ExecuteScript(getImageBase64Script) as string;
                if (imageInBase64 == "") System.Threading.Thread.Sleep(10);
            }

            // * Write image to the file
            byte[] fileContent = Convert.FromBase64String(imageInBase64);
            File.WriteAllBytes(imageFileName, fileContent);
        }
    }
}

Hi dzharii, value of imageInBase64 is always null, is above code runs correct on your side?
I run it in VS 2017.