Eldin Ring Unable to Summon Cooperator Error Explained

Running into the unable to summon cooperator error in Elden Ring? Here's how to fix it.

Image via Bandai Namco
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You can summon friends in Eldin Ring to help with tough boss battles. However, if you’ve tried to do so, you may have come across the “Unable to summon cooperator, failed to join session” error notification, which keeps you from using the mechanic and (maybe) getting through the battle. Let’s take a look at why this happens and how to fix the unable to summon cooperator error in Elden Ring.

Elden Ring Unable to Summon Cooperator Error Explained

What Causes the Unable to Summon Cooperator Error?

There are multiple reasons you might be unable to summon a cooperator, such as;

  • Network Issues: Your network internet connection might be weak.
  • Server Issues: The Eldin Ring servers may be down or experiencing problems.
  • In-game Network Issues: The settings for the in-game network may not be set up correctly. 
  • Other Players Summoned First: Another gamer may have summoned the same cooperator before you.
  • Background Applications: You might have too many background applications open when playing (PC).

How to fix the Unable to Summon Cooperator Error

Now that we know what causes the issue, let’s look at some ways you can try to fix it. 

Check Your Internet Connection 

When an issue like this occurs, it’s always best to check your internet connection first. Make sure your connection is stable and that your internet speed is high enough. You can use the Ookla Speed Test to see your download speed and how many megabytes per second (Mbps) you’re getting. If you experience network issues, you can reset your router or modem to fix them.

Check the Eldin Ring Servers 

If you’re still experiencing the error, check the status of the Eldin Ring servers. If they’re unstable or down, nothing is wrong on your end. Indeed, you’ll have to wait until they’re back up and running. Check the Elden Ring Twitter (X) account to see if there’s an official message from the developers, or head over to the Bandai Namco news page. You can also check the game’s Discord servers to see if other players are running into the unable to summon cooperator error.

Check In Network Settings

Make sure to check if you’ve properly set up the network setting in Eldin Ring. To do this, go into Settings, and then select Network. Then select System. It’s possible you’ve gone offline in the game itself and need to turn the online functions back on.

Restart the Game 

If you’re still experiencing the unable to summon cooperator error, you can restart Eldin Ring. Restarting the game may fix any internal errors that were occurring. Similarly, you can also restart your PC or console to resolve the issue. 

Update Eldin Ring 

Always check for available updates when running into issues like these. If there’s an update available, install it. While new updates and patches typically download automatically, that may not be the case here — and they usually fix common bugs and errors. 

Close Background Applications

For PC players, it’s always good to open Task Manager and see what background applications are running. Elden Ring (and any game) can experience issues such as this because of these programs. It’s a longer shot for this issue, but it never hurts to try if none of the above work.

Those are all the ways to fix the unable to summon cooperator error in Elden Ring. For more tips and guides on Bandai Namco’s open-world Souls-like, check out our guides hub.

About the author

Antonio Samson

Antonio Samson is a gamer, writer and movie enthusiast. He loves games from all genres but has a deep fondness for RPGs. His Favorite games include Xenoblade Chronicles, Legend of Zelda and Kingdom Hearts. When he is not playing games he spends his free time watching movies and exploring new places.