Fix Tears of Metal Co-op Multiplayer Not Working Fast

You rallied the squad, geared up your commanders, and prepared to dive into the bloody, large-scale medieval skirmishes of Tears of Metal . But instead of glorious co-op slaughter, you are met with “Connection Failed” prompts, infinite loading screens, or bizarre desync issues where your friend’s character is moonwalking into a horde of enemies. Trying to enjoy the tactical hack-and-slash brutality of Tears of Metal when the multiplayer infrastructure refuses to cooperate is an absolute momentum killer.

TL;DR: The Short Answer

If your Tears of Metal co-op multiplayer is not working, run through these immediate fixes to restore connectivity:

• Check Server Status: Verify if the official Tears of Metal servers are undergoing maintenance via their official social media channels.
• Restart Both Games: Both the host and the client should completely exit the game and relaunch.
• Whitelist the Executable: Add the Tears of Metal game folder to your Antivirus and Windows Defender Firewall exception lists.
• Disable VPNs/Proxies: Turn off any active Virtual Private Networks or proxy services that might be rerouting your connection.
• Verify Integrity of Game Files: Use Steam (or your respective launcher) to repair corrupted network configuration files.
• Sync System Clocks: Ensure both players have their Windows time and date settings set to “Automatic” to prevent handshake certificate failures.

Table of Contents

• Understanding the Root Causes of Co-op Failures
• Step-by-Step Troubleshooting Guide
• Phase 1: Basic Network Integrity
• Phase 2: Firewall and Security Interventions
• Phase 3: Advanced Network Configuration (NAT & Port Forwarding)
• How to Fix Infinite Loading Screens in Multiplayer
• The Alternative: Mastering the Solo Campaign
• Skip the Grind: Use XMODhub for Single-Player
• Deciphering Common Tears of Metal Multiplayer Error Codes
• Optimizing Router QoS for Stable Co-op
• Frequently Asked Questions
• Final Verdict: Reclaiming the Battlefield

Understanding the Root Causes of Co-op Failures

Before diving into the deep end of network configurations, it is crucial to understand why Tears of Metal co-op multiplayer fails in the first place. The game relies heavily on peer-to-peer (P2P) infrastructure combined with master matchmaking servers to connect players.

When a failure occurs, it usually stems from one of three areas:

1. The Handshake Failure: The host and the client cannot establish a secure connection due to mismatched game versions or unsynced system clocks.
2. The Firewall Blockade: The host’s operating system actively rejects incoming packet requests from the client, treating the game’s traffic as a potential threat.
3. The NAT Type Conflict: If one player has a “Strict” NAT type and the other has a “Moderate” or “Strict” NAT type, the connection simply cannot bridge the gap.

Understanding these mechanics saves you time. If the issue is a NAT type, restarting the game won’t fix it. If the issue is a firewall block, port forwarding won’t matter until the software exception is made.

Step-by-Step Troubleshooting Guide

If the quick fixes in the TL;DR section did not resolve your issues, it is time to move through our structured diagnostic phases. Both you and your co-op partner should follow these steps simultaneously for the highest success rate.

Phase 1: Basic Network Integrity

Do not overlook the fundamentals. Often, the connection failure is a result of corrupted local data rather than complex network routing.

1. Verify Game Version Synchronization

Tears of Metal frequently pushes hotfixes and minor updates. If the host has downloaded a 15MB patch but the client has not, the game will refuse the connection without clearly stating why.

• Close the game.
• Force Steam to check for updates by restarting the Steam client entirely.
• Ensure both players see the exact same version number on the main menu screen.

2. Flush Your DNS Cache

Sometimes, your PC holds onto outdated IP addresses for the game’s matchmaking servers.

• Press Windows Key + R, type cmd, and press Enter.
• Type ipconfig /flushdns and press Enter.
• Restart your PC and attempt to host the lobby again.

Phase 2: Firewall and Security Interventions

Modern antivirus software and Windows Defender are notoriously aggressive toward P2P multiplayer games. They often block the specific ports Tears of Metal needs to maintain a stable co-op session.

1. Whitelisting in Windows Defender Firewall

You must explicitly tell your operating system that Tears of Metal is safe.

• Press the Windows Key and search for “Allow an app through Windows Firewall.”
• Click “Change settings” (requires administrator privileges).
• Click “Allow another app…” and navigate to your Tears of Metal installation folder.
• Select the primary TearsOfMetal.exe file.
• Ensure both the Private and Public checkboxes are ticked.
• Click OK and apply the changes.

2. Managing Third-Party Antivirus

If you use Bitdefender, Norton, or Kaspersky, their built-in firewalls will override Windows Defender. You must navigate to their respective “Exceptions” or “Exclusions” tabs and add the entire Tears of Metal folder path.

Phase 3: Advanced Network Configuration (NAT & Port Forwarding)

If you are still staring at a “Join Failed” error, the issue is almost certainly a NAT (Network Address Translation) conflict. For peer-to-peer co-op to function flawlessly, at least one player (ideally the host) needs an “Open” NAT type.

Checking and Changing NAT Type

While PC does not display NAT types as obviously as consoles do, a Strict NAT will block incoming connections. To fix this, you need to set up Port Forwarding on your router.

1. Log into your router’s admin panel (usually accessed by typing 192.168.1.1 or 192.168.0.1 into your web browser).
2. Locate the “Port Forwarding” or “Virtual Servers” section.
3. You will need to forward the specific ports required by Steam and Tears of Metal.

• TCP: 27015, 27036
• UDP: 27015, 27031-27036

1. Assign these ports to the IPv4 address of your gaming PC.
2. Save the settings and reboot your router.

Warning: Only the host needs an Open NAT, but having both players configure their ports drastically reduces desync and lag spikes during heavy combat sequences.

How to Fix Infinite Loading Screens in Multiplayer

A unique and incredibly frustrating issue in Tears of Metal is getting stuck on an infinite loading screen after successfully joining a lobby, right as the mission starts. This is usually a data streaming bottleneck.

• Move the Game to an SSD: If the host is running Tears of Metal on an NVMe SSD and the client is on an old mechanical HDD, the client will fail to load the battlefield assets in time, causing the server to time out the connection. Both players should install the game on an SSD.
• Lower Texture Quality: Temporarily lowering texture quality and disabling V-Sync can speed up the initial asset loading phase, allowing the handshake to complete before the server drops the client.

The Alternative: Mastering the Solo Campaign

Sometimes, the servers are just having a bad day, or your friend has to log off. Do not let connectivity issues stop you from enjoying the game. Tears of Metal offers a robust, punishing single-player experience where you command your forces alone.

If you are struggling to manage the chaos without a co-op partner to watch your back, you need to optimize your solo approach. Relying on sheer numbers will not work; you need a strategic build that maximizes your commander’s lethality. For players looking to absolutely dominate the battlefield solo, check out our comprehensive guide on the Tears of Metal best solo build one hit setup. It details exactly how to structure your upgrades to wipe out enemy squads single-handedly, compensating for the lack of a human teammate.

Skip the Grind: Use XMODhub for Single-Player

Let’s be brutally honest. If your co-op is broken and you are forced to play solo, Tears of Metal can become an overwhelming grind. Managing massive enemy waves, farming resources to upgrade your settlement, and dealing with punishing boss encounters alone takes hours of dedication.

If you do not have the time or patience to grind out the single-player campaign manually, there is an ultimate shortcut: XMODhub.

XMODhub is a premium, safe, and incredibly powerful tool designed to eliminate the tedious grind in single-player PC games. Note: XMODhub strictly operates in single-player or offline modes for Tears of Metal to maintain competitive integrity.

With XMODhub, you can instantly activate features like God Mode, Infinite Resources, One-Hit Kills, and Instant Skill Cooldowns, allowing you to experience the story and massive battles without the frustration of repeated deaths.

How to Dominate Tears of Metal Solo in 3 Steps:

1. Download XMODhub: Install the lightweight application from the official website.
2. Auto-Detect Tears of Metal: Launch the app, and it will instantly recognize your game installation.
3. Toggle Cheats: Launch the game through XMODhub and use the overlay to activate your desired enhancements.

Stop letting artificial difficulty and grinding waste your gaming time. Let XMODhub handle the heavy lifting.

Download Tears of Metal Trainer Now

Deciphering Common Tears of Metal Multiplayer Error Codes

When the Tears of Metal multiplayer fix requires more than a simple restart, the game will occasionally spit out specific error codes. Diagnosing these alphanumeric strings is the fastest way to bypass generic troubleshooting and target the exact root cause of your matchmaking failure. Below is a breakdown of the most frequently reported multiplayer errors and their definitive solutions.

Optimizing Router QoS for Stable Co-op

If you are successfully connecting to your friend’s lobby but constantly suffering from rubber-banding or sudden drops mid-battle, your local network might be prioritizing the wrong traffic. Enabling QoS (Quality of Service) on your router ensures that gaming packets are processed before background tasks like video streaming or OS updates.

1. Log into your router’s administrative dashboard.
2. Locate the QoS Settings (often found under Advanced Network or Traffic Control).
3. Enable QoS and add your gaming PC’s MAC address to the highest priority tier.
4. If your router supports application-specific QoS, manually prioritize traffic utilizing the Steam Datagram Relay ports.

By forcing your router to treat Tears of Metal as VIP traffic, you can severely reduce latency spikes during massive horde encounters.

Frequently Asked Questions

Final Verdict: Reclaiming the Battlefield

Dealing with Tears of Metal co-op multiplayer not working is a frustrating hurdle, but it is rarely an unsolvable one. By methodically verifying your game files, whitelisting the application through your firewall, and ensuring your NAT type is optimized, you can clear the roadblocks preventing you and your friends from conquering the map together. Remember that network issues require a logical approach—start with the simplest fixes like restarting and checking for updates before diving into router port forwarding.

And when you inevitably transition back to the single-player campaign, remember that your time is valuable. If the solo grind becomes too punishing, XMODhub is your ultimate equalizer. Supporting over 5,000 top-tier PC single-player titles—from massive RPGs like Baldur’s Gate 3 and Elden Ring to tactical slashers similar to Tears of Metal—XMODhub ensures you dictate how you play. Fix your network, grab your sword, and dominate the battlefield on your own terms.