Encountering an unexpected error message like “Failed to Join Session (5038f-MW1)” in Monster Hunter: World can be frustrating, especially when you’re gearing up to take down legendary beasts with your squad. This issue has impacted players across all platforms — PC, PlayStation, and Xbox — disrupting the multiplayer experience that defines the game. Fortunately, this error is well-documented, and there are proven fixes that can help you return to the hunt in no time.
In this guide, we’ll discuss the causes behind Error 5038f-MW1 and walk you through reliable solutions to resolve it, whether you’re playing on console or PC.
What Is Error 5038f-MW1 in Monster Hunter: World?
This error occurs when the game is unable to establish or maintain a stable connection to Capcom’s matchmaking servers. Players often see this message when trying to join another hunter’s online session or participate in multiplayer lobbies.
Some of the root causes include:
- Unstable internet connection or NAT type issues
- Conflicts with VPN or firewalls
- Outdated game files or Steam client (on PC)
- PSN/Xbox Live or Steam server issues
How to Fix the 5038f-MW1 Error
Below are several effective solutions, arranged from the simplest fixes to the more in-depth configurations. Follow them in order for the best results.
1. Check Server Status
Before diving into any troubleshooting, verify that this isn’t a server-side issue. Visit the official Monster Hunter: World Twitter account or the Capcom support page to check for announcements regarding maintenance or outages.
Also, check the status of your specific platform:
2. Test and Reset Your Internet Connection
Sometimes the issue stems from packet loss or high latency. Try the following steps:
- Restart your modem/router
- Switch to a wired Ethernet connection for more stability
- Avoid downloads or uploads in the background while playing
If you’re on a console, you can test your internet by using the built-in network diagnostics tool found in settings.
3. Change NAT Type to Open (Type 1 or Type 2)
Network Address Translation (NAT) affects your ability to connect to other players. A restrictive NAT type can prevent proper matchmaking. Changing your NAT type to “Open” improves connectivity.
To do this, you may need to enable UPnP (Universal Plug and Play) on your router or configure port forwarding manually using these ports:
- TCP: 27015, 27036
- UDP: 27015, 27031-27036
Be sure to save your router settings and restart both your router and console or PC after making these changes.
4. Disable VPNs and Firewalls Temporarily
VPNs and firewalls can conflict with Monster Hunter: World’s servers. Temporarily disable these services and attempt to join a session again. If disabling your firewall works, consider adding the game as an exception to your firewall or antivirus software.
5. Update Game and Platform Software
Outdated versions of the game or system software can result in connectivity issues. Always ensure that you have the latest version installed on both:
- Steam: Right-click the game and select “Check for updates”
- Consoles: Use the “Check for Updates” option on the game icon
Also, update your console firmware or Steam client if prompted.
6. Reinstall the Game (Last Resort)
If none of the above solutions work, consider reinstalling the game. Corrupted files or incomplete installations could be to blame. Be aware that this step may take time and bandwidth, so do it only after exhausting other options.
Final Thoughts
The Monster Hunter: World 5038f-MW1 error is usually caused by connectivity issues but is fortunately manageable with the right adjustments. Make sure your internet is stable, your NAT type is open, and that unnecessary software isn’t interfering with your connection. Monster Hunter thrives in co-op gameplay, and getting back online is well worth the effort.
If you continue to experience issues even after attempting these fixes, don’t hesitate to contact Capcom Support for further assistance.
Now that you’re equipped to tackle this error, it’s time to head back to Astera and join your fellow hunters for the next big quest.