Error On Download Remote Host Closed Error Albion Online Updated -

This error typically means:

Common causes:

This code is designed to be dropped into a generic FileDownloader class. This error typically means:

using System;
using System.IO;
using System.Net;
using System.Threading;
using System.Threading.Tasks;
public class AlbionDownloader
// Configuration
    private const int MaxRetries = 3;
    private const int DelayBetweenRetriesMs = 1000;
/// <summary>
    /// Downloads a file with specific handling for "Remote Host Closed" errors.
    /// Supports Resume/Retry logic.
    /// </summary>
    /// <param name="url">The URL of the file to download.</param>
    /// <param name="destinationPath">Local path to save the file.</param>
    /// <param name="progress">Optional progress reporter (0-100).</param>
    /// <param name="token">Cancellation token.</param>
    public async Task DownloadFileWithRetryAsync(string url, string destinationPath, IProgress<int> progress = null, CancellationToken token = default)
// Ensure directory exists
        Directory.CreateDirectory(Path.GetDirectoryName(destinationPath));
int retryCount = 0;
        long totalBytesToReceive = 0;
        long bytesReceivedSoFar = 0;
// Determine if we are resuming an existing partial download
        if (File.Exists(destinationPath + ".tmp"))
bytesReceivedSoFar = new FileInfo(destinationPath + ".tmp").Length;
while (retryCount <= MaxRetries)
try
// Create the request
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.UserAgent = "AlbionOnlineLauncher/1.0"; // Mimic launcher if needed
                request.Method = "GET";
// If we have partial data, ask for the rest (Resume support)
                if (bytesReceivedSoFar > 0)
request.AddRange(bytesReceivedSoFar);
using (HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync())
                using (Stream responseStream = response.GetResponseStream())
                using (FileStream fileStream = new FileStream(destinationPath + ".tmp", FileMode.Append, FileAccess.Write, FileShare.None))
// Get total size (if resuming, ContentLength is only the remaining part, so calculate total)
                    long? contentLength = response.ContentLength;
                    if (contentLength.HasValue)
if (bytesReceivedSoFar > 0 && response.StatusCode == HttpStatusCode.PartialContent)
totalBytesToReceive = bytesReceivedSoFar + contentLength.Value;
else
totalBytesToReceive = contentLength.Value;
                            // If server didn't support resume, start over
                            fileStream.SetLength(0);
                            fileStream.Seek(0, SeekOrigin.Begin);
                            bytesReceivedSoFar = 0;
byte[] buffer = new byte[8192];
                    int bytesRead;
while ((bytesRead = await responseStream.ReadAsync(buffer, 0, buffer.Length, token)) > 0)
await fileStream.WriteAsync(buffer, 0, bytesRead, token);
                        bytesReceivedSoFar += bytesRead;
// Report Progress
                        if (totalBytesToReceive > 0 && progress != null)
int percentage = (int)((bytesReceivedSoFar * 100) / totalBytesToReceive);
                            progress.Report(percentage);
// Download completed successfully
                if (File.Exists(destinationPath)) File.Delete(destinationPath);
                File.Move(destinationPath + ".tmp", destinationPath);
return; // Exit function successfully
catch (Exception ex) when (IsRemoteHostClosedError(ex))
retryCount++;
if (retryCount > MaxRetries)
throw new InvalidOperationException($"Download failed after MaxRetries retries. Remote host repeatedly closed connection.", ex);
// Log event or update UI
                Console.WriteLine($"Error: Remote host closed connection. Retrying (retryCount/MaxRetries)...");
// Exponential backoff delay
                await Task.Delay(DelayBetweenRetriesMs * retryCount, token);
// Loop continues, logic checks for .tmp file size and resumes automatically
catch (Exception ex)
// Handle other non-recoverable errors (404, 403, Disk Full, etc.)
                throw new InvalidOperationException("Download failed due to an unrecoverable error.", ex);
/// <summary>
    /// Checks if the exception is the specific "Remote host closed" error.
    /// </summary>
    private bool IsRemoteHostClosedError(Exception ex)
// 1. Check for WebException (The server closed the connection)
        if (ex is WebException webEx)
webEx.Status == WebExceptionStatus.KeepAliveFailure
// 2. Check for IOException (The underlying stream was closed unexpectedly)
        if (ex is IOException)
return true;
return false;

Once you’ve fixed the update, take these steps to avoid it happening again:

To understand the problem, one must first decode the message. A “remote host” refers to the Albion Online update server. “Closing connection” indicates that the server deliberately terminated the data transfer before the file was fully downloaded. Unlike a simple timeout or a slow download, this is an active refusal to continue sending data. For the player, the result is a stalled update, often after downloading hundreds of megabytes, forcing a frustrating restart. Common causes:

This error is particularly insidious because it mimics a network outage, but it is often a sign of a protocol or security mismatch. The Albion Online launcher uses standard HTTP/S protocols to fetch game assets. When the remote server detects something anomalous in the request—such as an incorrect packet order, a mismatched checksum, or a sudden change in the connection’s behavior—it is programmed to “close the connection” as a defensive measure. In essence, the server is not crashing; it is actively rejecting the client’s request for safety or consistency reasons.

Try these solutions in order. Test the launcher after each step. This code is designed to be dropped into

Often, the launcher simply gets confused. Reset its working memory.