[Sham]

у меня этот вариант нормально отработал (компилировал под .net framework в win10)

Код:

using System;
using System.ComponentModel;
using System.IO;
using System.Net;

public class Program
{
    public static void Main()
    {
        new Program().Download("https://github.com/deemru/Chromium-Gost/releases/download/121.0.6167.85/chromium-gost-121.0.6167.85-windows-386.zip");
    }
    public void Download(string remoteUri)
    {
        string FilePath = Directory.GetCurrentDirectory() + "/temp/" + Path.GetFileName(remoteUri);
        using (WebClient client = new WebClient())
        {
            if (!Directory.Exists("temp"))
            {
                Directory.CreateDirectory("temp");
            }
            Uri uri = new Uri(remoteUri);
            client.DownloadFileCompleted += new AsyncCompletedEventHandler(Extract);
            client.DownloadProgressChanged += new DownloadProgressChangedEventHandler(ProgessChanged);
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
            client.DownloadFileTaskAsync(uri, FilePath).Wait();
        }
    }
    public void Extract(object sender, AsyncCompletedEventArgs e)
    {
        Console.Write("\nFile has been downloaded.\n");
    }
    public void ProgessChanged(object sender, DownloadProgressChangedEventArgs e)
    {
        Console.Write("\rDownload status: " + e.ProgressPercentage + "%.");
    }
}