This code is designed to be dropped into a generic FileDownloader class.
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)
// 2. Check for IOException (The underlying stream was closed unexpectedly)
if (ex is IOException)
return true;
return false;
The full game data (10+ GB) might be fine. The launcher (a small 200MB program) is often the broken part.
Before jumping to fixes, identify the most likely culprit:
Albion’s legacy networking stack sometimes chokes on modern IPv6 requests. Forcing IPv4 often solves the "remote host closed" error instantly.
Remote Host Closed Connection error during an Albion Online typically indicates a dropped connection between your client and the update server , often caused by ISP blocks or local network interference Steam Community Immediate Workarounds
: This is the most common fix to bypass regional ISP issues or routing errors. Once the update completes, you can usually disable the VPN and play normally. Switch Networks
: Try connecting via a mobile hotspot if you are currently using WiFi or a standard broadband connection. Direct Execution : Try launching the game directly from the launch_albion_online.exe
file in your install directory; while it may be unpatched, it sometimes bypasses launcher-specific blocks. Albion Online Forum Network & System Fixes
Client can't update, Error on Download - Albion Online Forum This code is designed to be dropped into
SirisLi wrote: Hello! Some of the players are reporting that the issue has been resolved after today's Hotfix. Please check if it' Albion Online Forum RemoteHostClosed error - Bugs - Albion Online Forum
RemoteHostClosedError Albion Online typically occurs during an update or initial download when your connection to the game's update service is interrupted
. This can be caused by ISP restrictions, outdated client files, or local network configurations. Primary Troubleshooting Steps
: This is the most frequently cited solution. Connecting to a VPN (specifically to a different region like the UK or US) often bypasses ISP-level blocks on the update servers. Switch Your Network
: If you are using Wi-Fi, try switching to a mobile hotspot, or vice versa, to rule out local router or ISP issues. Change DNS Settings
: Manual DNS changes to public servers can resolve routing issues. Preferred DNS (Google) or (Cloudflare). Alternate DNS Disable IPv6
: Some users found that disabling IPv6 in their network adapter settings allowed the download to proceed. Run as Administrator : Right-click the Albion Online launcher and select Run as administrator to ensure it has the necessary permissions to write files. Alternative Installation Methods
If the native launcher continues to fail, you can use these workarounds: Can't update my client : Remote Host Closed Error - Bugs The full game data (10+ GB) might be fine
The RemoteHostClosedError in Albion Online typically occurs during updates because the game's launcher loses its connection to the patching server. This is often due to regional ISP blocks, routing issues, or network interference rather than a problem with your game files. Immediate Workarounds
If you're stuck on the update screen, these methods are the most effective for bypassing the error:
Use a VPN: Connecting to a VPN (even a free version) often fixes the issue by rerouting your connection to the server. Once the update finishes, you can usually disable the VPN and play normally.
Switch Networks: Try using a mobile hotspot or a different Wi-Fi connection if available.
The Steam Method: If the native launcher keeps failing, download the game through Steam. You can then copy the updated files from the Steam directory (steamapps/common/Albion Online/game) into your original launcher's folder to overwrite them. Advanced Fixes
If basic network switching doesn't work, try these technical adjustments:
Change DNS Settings: Manually set your DNS to Google's public servers (8.8.8.8 and 8.8.4.4) to bypass ISP-related resolution issues.
Disable IPv6: Some players report that disabling IPv6 in their Windows network adapter settings resolves persistent connection drops. Note: Re-enable IPv6 after playing if other apps require it
Repair EasyAntiCheat: Navigate to your game files and run the EasyAntiCheat setup to "Repair Service".
Clean Temp Files: Delete your %temp% folder contents and restart both your router and PC to clear cached connection data. Launcher-Specific Fix
If the launcher is completely unresponsive, check the Albion Online Downloads page for a newer launcher version (1.0.34.485 or higher) and reinstall it directly to replace the old one. Can't update my client : Remote Host Closed Error - Bugs
It looks like you’re describing an error message related to downloading an update for Albion Online, specifically:
“error on download remote host closed”
And you’re also mentioning that you’ve found a “solid article” about it.
If you’re looking for help with this error, here’s a quick summary of what usually causes it and how to fix it — plus how that “solid article” likely explains it.
If the article is from the official Albion Online forum, Reddit, or a known gaming tech site, it likely covers:
✅ Best practice: If that article solved your issue, bookmark it. If not, check the date — older articles may refer to outdated launcher versions.