If you have problems with anUnable to Summon Cooperator errorin Elden Ring, you will first need to check your internet connection. Sometimes,internet issuesand issues with your connection can cause various game errors, and that’s no different with Elden Ring.

To check your internet connection, we recommend going to a site such asFast.com. It is a free tool that players can use to test theirinternet speed. If you find after using Fast.com that your speed is slower than usual, this could be the cause of the Unable to Summon Cooperator error.

Image via FromSoftware Inc

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But, if nothing is out of the ordinary, there is not much else you may do to fix the error beyond a few attempts at restarting yourrouter,system, andgame. Still, these fixes are not guaranteed to work, and the root of the Summon Cooperator error stems fromserver issuesor a bug in the game. The bug may also happen when players attempt to summon a player who another player has recently summoned.

Another possible cause of the problem isovercrowded serversor players needing to defeat theMargit Boss. That said, we recommend waiting a bit to summon a Cooperator, as by then, the developers should release a patch that fixes the problem.