ASTRONEER

ASTRONEER
Game Info

How to Solve 'YOUR CONNECTION TO THE HOST HAS BEEN LOST' in ASTRONEER

Are you also one of the fellow space travelers, plagued by the 'YOUR CONNECTION TO THE HOST HAS BEEN LOST' Error in ASTRONEER?
You have come to the right place, as we try to guide your spaceship around this issue - so without further ado, lets begin!

Avoiding the Error

The error, unlike its title suggests, is probably not even a connectivity problem after all. It's much more likely, that this issue has its roots in the save-state of your co-op partner within your save file.
So in order to prevent this from happening, make sure to manually duplicate your saved games from time to time.
You can do this by following these steps

  • Open up the menu (ESC on PC, Options-Button on Console)
  • Select your Save File
  • Use the Duplicate Option
Create Backups on the Regular
Create Backups on the Regular
By doing that you always have the chance to revert back to a still intact save game from not too long ago.

Dealing With the Error on PC

You are currently experiencing this issue but have no working backup save?
Don't worry, the following fix might just solve your issue (temporarily).
First, the host has to invite the co-op partner as usual.

Inviting Your Friend to the Co-op Session
Inviting Your Friend to the Co-op Session

After getting the invite, the co-op partner should try to establish connection by accepting the invite in the Steam overlay.
This will most likely result in the known 'YOUR CONNECTION TO THE HOST HAS BEEN LOST' error discussed here.
The Game also might freeze at this point, don't worry, just continue.

The Error With the Occasional Game Freeze
The Error With the Occasional Game Freeze

From here on, don't try a another invite or manual join - instead, navigate back to the Steam overlay and select 'Join Game' instead.

Join the Session After the Invite
Join the Session After the Invite

This will most likely load you into the session with a sped-up visual of the ingame days catching up.
At this point, you're all set and can continue playing - enjoy!

Dealing With the Error on Console

There is currently no known workaround for this issue on console but inviting and joining back in might work as well.

Fixing the Error

The bad news about this: it's just a workaround, not a fix.
You will have to repeat the steps mentioned above every time you launch your session.
As of the time of writing, there is no known fix to this issue. If we hear of any, we will update this section to let you know!