How to Fix Mistfall Hunter Crossplay Session Not Found & Invite Code Not Working Errors (2026 Guide)

Few things kill the excitement of a new co-op RPG faster than watching your friends load into a dungeon while you’re stuck staring at “Crossplay Session Not Found” or an Invite Code that simply refuses to work.

I’ve spent plenty of time with multiplayer RPGs over the years, and Mistfall Hunter isn’t the first game to struggle with launch-week networking problems. What surprised me is that most of these errors aren’t caused by broken internet connections at all. They’re usually the result of server synchronization, regional matchmaking, or platform-specific quirks that prevent players from joining the same lobby.

After trying nearly every solution shared by the community—and seeing what consistently works—I’ve put together this guide with the fixes that are actually worth your time.

If you’re trying to party up across Steam, PlayStation 5, and Xbox Series X|S, here’s everything you should know.

Why Mistfall Hunter Crossplay Sometimes Fails

Cross-platform play sounds simple from the player’s perspective. Press a button, send an invite, and jump into the game.

Behind the scenes, though, the process is much more complicated.

Mistfall Hunter has to verify:

• Both players are running the same game version.
• Each account belongs to compatible server regions.
• The multiplayer servers can authenticate both clients.
• Anti-cheat checks complete successfully.
• The lobby information is synchronized before the invitation expires.

If any one of those steps fails, the game usually responds with Session Not Found or an invite code that appears completely invalid.

The good news is that these problems are often temporary and can usually be fixed without reinstalling the game.

Common Reasons Invite Codes Stop Working

From what I’ve seen, there are four major causes.

If you’re lucky, the fix only takes a minute.

Fix #1 – Refresh Your Multiplayer Session Before Using the Invite

This is probably the strangest workaround, but it’s also the one I’ve seen work most often.

Instead of entering your friend’s invite code immediately:

1. Launch Mistfall Hunter.
2. Open Multiplayer.
3. Start searching for a public match.
4. Let matchmaking run for around 10 seconds.
5. Cancel the search.
6. Return to the private lobby.
7. Enter the invite code again.

It sounds ridiculous, but forcing the client to communicate with the matchmaking servers often refreshes whatever session information became stuck.

I’ve seen this trick solve matchmaking issues in several online games over the past few years, so it isn’t unique to Mistfall Hunter.

Fix #2 – Double Check That Everyone Has the Same Game Version

This is the first thing I always ask friends before spending an hour troubleshooting.

Steam updates almost instantly.

Console updates don’t always arrive at exactly the same time.

Sometimes one player installs a hotfix while another hasn’t even received it yet.

Even a tiny version difference can prevent crossplay from working.

Before trying anything complicated:

• Check for updates manually.
• Restart the platform launcher.
• Reopen the game.
• Verify everyone sees the same build number.

This alone solves a surprising number of “Session Not Found” reports.

Fix #3 – Regional Servers Matter More Than You Think

Mistfall Hunter doesn’t treat every player equally when building multiplayer lobbies.

Certain regions appear to be separated more aggressively than others.

If your group is spread across North America, Europe, and Asia, don’t automatically assume the player with the fastest connection should host.

Instead:

• Try having someone from another region create the lobby.
• Generate a fresh invite code.
• Send new invitations instead of reusing old ones.

Fresh lobbies often connect when recycled ones don’t.

Fix #4 – Use Player IDs Instead of Invite Codes

Honestly, I stopped relying on invite codes after running into repeated failures.

Player IDs have been much more reliable.

Instead of sharing temporary room codes:

1. Open the Social menu.
2. Find your Player ID.
3. Exchange IDs with friends.
4. Add each other permanently.
5. Join directly from the friends list.

This skips one extra networking step, which seems to reduce failed connections considerably.

If you’re planning to play regularly with the same squad, this is the better long-term solution.

PC Players: Windows Security Can Break Multiplayer

One issue that caught many Steam users off guard involves Windows Exploit Protection.

Some players discovered that Mandatory ASLR settings interfere with the game’s networking initialization.

If you’ve tried everything else and multiplayer still refuses to cooperate, it’s worth checking your Windows security configuration.

The general process involves opening Windows Security, navigating to Exploit Protection, locating Mandatory ASLR, and temporarily disabling the default enforcement before restarting your PC.

This isn’t something I’d recommend changing without understanding what it does, but if you’re comfortable adjusting Windows security settings, many PC players report immediate improvements afterward.

Don’t Forget Your Firewall

Firewalls are supposed to protect your computer.

Sometimes they’re a little too enthusiastic.

Mistfall Hunter communicates with authentication servers, matchmaking services, and other players almost simultaneously.

If Windows Firewall—or third-party antivirus software—blocks any of those connections, invites may silently fail.

Things worth checking include:

• Allowing Mistfall Hunter through Windows Firewall.
• Allowing Steam, Xbox App, or your launcher.
• Temporarily disabling third-party antivirus to test.
• Restarting the game after making changes.

If the problem disappears while security software is disabled, you’ve found the culprit.

New Players Need to Finish the Tutorial

This one catches a lot of people.

If someone in your group just bought the game, they might not actually have multiplayer unlocked yet.

Until the introductory missions are completed, some online features remain unavailable.

That means:

• Invite codes won’t work.
• Joining friends fails.
• Multiplayer options may even be hidden.

Before assuming something is broken, make sure everyone has progressed far enough to unlock cooperative play.

Console Fixes Worth Trying

Console networking problems are usually different from PC issues.

Fortunately, they’re also easier to solve.

PlayStation 5

If you’re playing on PS5:

• Install the newest system software.
• Check for the latest game update.
• Restart the console completely rather than using Rest Mode.
• Refresh system settings if lobby problems continue.

A full reboot often clears temporary networking glitches.

Xbox Series X|S

Xbox users should also try:

• Checking for pending updates.
• Power cycling the console.
• Signing out and back into the Xbox profile.
• Clearing temporary cache data.

I’ve seen cache-related problems affect multiplayer games more than once on Xbox, especially after rapid hotfix deployments.

Verify Your Game Files on Steam

Whenever networking bugs appear after a patch, verifying game files is one of the easiest maintenance steps available.

Corrupted files don’t always crash the game.

Sometimes they simply prevent specific systems—like matchmaking—from behaving correctly.

Steam’s built-in verification only takes a few minutes and can replace damaged or missing files automatically.

It’s not the miracle fix people sometimes claim it is, but it’s quick enough to be worth trying.

Small Things That Can Make a Big Difference

Some multiplayer issues are surprisingly random.

If nothing else has worked, try these quick fixes before giving up:

• Restart every player’s game.
• Generate a brand-new invite code.
• Recreate the lobby from scratch.
• Avoid joining immediately after an update goes live.
• Let the servers settle for fifteen to thirty minutes if a hotfix was just released.
• Restart your router if only one person in the group has connection issues.

These aren’t guaranteed solutions, but together they’ve helped many players reconnect successfully.

Mistfall Hunter Co-Op Guide: How to Play with Friends on PC and PS5 (Crossplay Guide)

Quick Troubleshooting Checklist

Before opening another support ticket, make sure you’ve checked everything below.

If every box is checked and the problem still exists, there’s a good chance the issue is currently server-side rather than something on your end.

Mistfall Hunter Extraction Guide: Dynamic Pod Spawn Logic & Map Rotation Rules Explained

Final Thoughts

Launch-period multiplayer games almost always experience a few networking headaches, and Mistfall Hunter is no exception. The encouraging part is that most of the current Crossplay Session Not Found and Invite Code Not Working errors don’t seem to be permanent bugs. They’re usually caused by synchronization hiccups, version mismatches, or temporary server communication problems that can be worked around with a bit of patience.

Personally, the two fixes that delivered the most consistent results were refreshing matchmaking before entering a private lobby and switching to Player IDs instead of relying on invite codes. They aren’t glamorous solutions, but they’re simple and surprisingly effective.

Until the developers continue refining the game’s backend infrastructure, treating multiplayer setup as a quick checklist rather than jumping straight into invitations will save you a lot of frustration. With the right combination of updates, region settings, and a fresh lobby, most squads should be back exploring Mistfall Hunter’s dangerous dungeons together in just a few minutes.

How to invite cross platform friends on Mistfall hunter & Join Their team (ps5 / Xbox / steam)