One of the hottest superhero games today is Marvel’s Avengers. And just like any other newly released games, this one is far from perfect. We’ve been getting a lot of reports about this game having a problem sometimes disconnecting or preventing players from matchmaking. If you’re having an issue joining or playing missions with your friends in matchmaking or if you keep on getting “failed to join session” error on Marvel’s Avengers, this article may help.

We include a list of factors that can cause this problem as well as the possible solutions that you can do.

Why Marvel’s Avengers Multiplayer is not working and keeps showing failed to join session error?

There is no single reason why Marvel’s Avengers multiplayer is not working, or why the game encounters the “failed to join session” error. In order to know the specific reason for your issue, you’ll need to narrow down the possible factors. Let’s check each of them below.

Game has server issues.

If you’re getting a “failed to join session” error, the first thing that you must consider as the cause is server issues. This is one of the common reasons for most games with multiplayer or matchmaking components.

Slow or intermittent internet connection.

In other cases, the main reason why the game is unable to complete the matchmaking process is due to slow or intermittent internet connection in a player’s network. You’ll need to check if you have an on-going issue with your own local network or with your ISP.

Random game bug.

If Marvel’s Avengers keeps crashing or if it sometimes shows the “failed to join session” error, there’s a chance that either problem is due to a random bug or fluke. This means that there may be an issue with your game because of some randomly occurring error in the system. It may be due to a third party application in your computer or connection.

Steam client problems.

For those who play Marvel’s Avengers via Steam, the “failed to join session” error can be attributed to a damaged game file/s. You can try to repair the game files using Steam’s own repair tool to check that.

How to fix Marvel’s Avengers failed to join session error

Below are the known solutions for Avengers “failed to join session” error. One of these solutions may work for you but not for others so be sure to go through each one of them to see which one is applicable.

Check for server problems.
To fix Avengers “failed to join session” error, the first thing that you need to do is to check whether or not the game servers are fine. To do that, visit the official Marvel’s Avengers Twitter page and see if there’s a known server outage or maintenance.
Update the Marvel’s Avengers game.
Keeping the game updated is the easiest way to fix known bugs as well as prevent future problems from developing. Make sure that you install updates as they become available.
Verify your local internet connection is working.
If your internet connection is slow or disconnecting randomly, Marvel’s Avengers may fail to establish communication with the server. Be sure to troubleshoot your network to determine if this is the cause of your problem. You should do this if there’s no known outage or server issues.
If you are using wifi, try connecting your computer directly to the router to see if that will fix the problem. Sometimes, wireless connection may become problematic due to signal interference.
Power cycle your local networking equipment.
If there’s no known server problems at the moment, the most likely cause of the problem may be coming from your end. To fix the problem, one of the troubleshooting steps that you can do is to reboot your modem or router.
Simply turn off your modem or router and unplug it from from the power outlet for 30 seconds. Then, turn it back on and check for the problem.
Reboot your PC.
Another simple way to fix games on PC is to reboot the computer. Like the previous step, you want to turn off your computer, wait for 30 seconds, and start the PC back up. Then, you want to check if the problem returns.
Repair game files.
If you bought Marvel’s Avengers from Steam, consider repairing the game files. This can help if the main reason why the game crashes is due to damaged files. Learn how to check or verify game files by following this link:
How To Verify Integrity of Game Files To Fix Steam Issue
Restart matchmaking.
If there’s no server issue happening right now and your internet connection is working normally, you can try to disable matchmaking, pick a mission to play instead, then enable matchmaking again. While not guaranteed to work 100% of the time, some players have reported that it was consistent enough for them.