@liggisten , tried all above already, nothin helps 
I am sure its not an issue with the network since several players on xbox is having the same problem.
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Hi and thanks for the reply.
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Type of network: private, home-network.
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Yes, it did not help.
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I did network test using my fiber connection. Under NAT-TYPE it shows that xbox cannot get IP from Teredo. I am using IPv4.
I have no other issues with other games.
NAT-typa at router side is set to open. -
No, no other issues with other games.
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This occured last week, I think…,I have been able to play without issues a long time before that.
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Yes, this happens 100% of the times joining or hosting does not make a difference.
I have tried all the “Microsoft-solutions”; powercycling, reset router etc. to no avail.
Tried joining both open games (cant find any) and specicic friends.
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Thanks for the additional information, @baghera41! Much appreciated. It has been added to the ticket as part of the investigation.
Sadly we are at a bit of a loss as what to do right now for those of you experiencing this that can’t get around it via e.g. the power-cycling workaround…
Something that would be interesting is for you/your friend to try this while on a completely different network and see if the issue still occurs, but I realize that might not be a particularly attractive alternative and a bit of a pain to deal with. Maybe our game has problems with certain types of networks/setups? 
As we are having problems with XBOX in particular right now it’s also not entirely clear when we’ll roll out an update (We’ll share news on this on our official channels when we know more). If we are lucky the next patch has a positive effect in regards to this issue, however, even if we do roll out an update, at this time there is no guarantee it’ll fix it, as we have yet to find the underlying issue and root cause of this. It is really strange how it works and then all of a sudden stops working without any clear indication or reason as to why
I’ll make sure to post any updates on regards to this issue here in this thread.
We understand this must be very frustrating and know that we are sorry for the inconvenience 
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Platform: PS4
Description: When try to join a friends session, the error message that the host is no longer available is shown.
Steps To Reproduce: Just accept the invite or try to join via user profile. we also tried to change host/client and switched from “only invite” to “anybody”.
Images / Videos: yes, screenshot on PS4
Host or Client: Tried both ways, I tried to host a session and also I tried to join my friends session.
Players in your game: None but me, others weren’t able to join due to this error.
Specifications: PS4 with the latest system update.
Platform: PS4/PS5
Description: unable to play with invited friend
Steps To Reproduce:
Images / Videos:
Host or Client: both tried
**Players in your game:**2
Specifications:
Come on we have 2021 and we are not able to meet in the game. A friend of mine has bought the game and all the dlc and me too. We can’t meet in the game. We have tried everything in this Forum. And nothing works!!!
Please solve the problem. We both have the same message that the host is no longer present!
Please answer how we can easily meet in 2021 like other games!
Thanks
Hello @SR_knivspark ,
I play on PC (Steam) and had a friend of mine from Sweden get the same so we could play together. Our experience has been poor and matches much of the above with a number of bizarre additions.
If I host the game, he can connect in, but if he interacts with any containers he will glitch and no longer appear to move (from my perspective). At that point he is in the game as a ghost. He can move about, can not open doors or containes and robots do not attack him. He doesn’t show up on the map, I can’t see him even if I’m in the same room as him and he isn’t in the team list.
Both of us independently can join random games through “Find a game”. If I attempt to connect to his game, either through an invite (through Steam) or by picking Join game (again through Steam), I always get the Host not Present error message.
I’m based in the US on the East coast, so I suspect the additional network latency is further hindering things.
Of the dozens of MMORPGs I’ve played and other multi-player titles, this is the first one with this pattern. I have a VPN connection and the results for me are the same whether or not it is active. I’m having my friend get a VPN also, so we can bypass possible blocking at the level of his ISP or router.
The “power cycle” option seems to not apply, as I’ve not had any changes in behavior following a reboot.
It is interesting to note that another in-game friend is able to join my session with no apparent issues, though I suspect they are at least on the same continent with me.
Let me know if there are any troubleshooting steps I can take to help you guys.
-Doermank
Hi @Doermank 
Thanks for the detailed report, much appreciated!
I find this (Above) especially interesting and will make sure to add this to our ticket for tracking this issue so that this information can be taken into account in the investigation.
Based on this information (above) I would be very curious to hear if others experiencing this issue knows if the person you are trying to play with is geographically far away from you / on another continent and if it’s possible that there is substantial network latency between the two of you. If you are experiencing this issue and can provide this type of information in a comment below that would be great, thanks!
Thanks for already having tested disabling/enabling your VPN, and please let us know in this thread how this behaves after your friend has gotten a VPN as well and you’ve tried to play together again.
Sorry for the inconvenience and thanks again for reporting!
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Based on some unique aspects of his behavior I suspect a port blocking/failure to forward type issue. This was the primary reason I’ve suggested to him that he make use of a VPN. I personally use NordVPN as it has very low latency and works with all of my games. I’ve recommended the same for him. BTW I am also a software engineer, enterprise architect and cloud engineer. I’ve got a deep understanding of network technologies and how application level protocol decisions can impact performance, scalability, security and reliability. I’d be happy to help with your debugging process in any way that makes sense, up to and including capturing network interactions with wireshark. Good luck with your debugging process!
2 Likes
That’s interesting @Doermank! I really appreciate you sharing your expertise and being so helpful.
I have forwarded your mentioned suspicion (port blocking/failure to forward type issue) to the team for discussion and how to best proceed.
In the meantime, as we have been unable to reproduce the issue internally the network capturing via wireshark does sound like it could be worth a shot and give us some more insight into what is happening. Let’s discuss in DM’s how to handle that (I will send you a message).
Thanks again!
I don’t know if this will help or not, but NordVPN does not support port forwarding.
im here new to the game having this problem. i play with 2 other people. me and 1 person cant join each others worlds and cannot accept any invites from each other. but we can both join our other friends world. the only thing is when we join w ecant see each other at all. what is going on i spent $30 on this game and getting upset.
Hello!
Me and my girlfriend play, or rather we want to play together in a wonderful game, which is Generation zero. Unfortunately, there are problems with joining, as above, but it succeeds after a few times. The worst thing is that every 10 minutes he throws it away and we have to try, reconnect. When you finally fix this error. You are wasting the potential of the game.
Same issue on Xbox. Fail to join multiplayer session, or the session is full. Tried everything to fix. No luck connecting.
I just used another internet (NAT 3) and everything works nicely. I used NAT 2 before.
The NAT Type describes the quality and security of the network your device is connected to.
It can’t be selected. It’s a classification that your network gets depending on how your device is connected to the internet (LAN/WLAN, required ports opened in firewall or not,…).
The best NAT Type for online gaming with pc or console always is NAT type 2.
If you see NAT type 3, this indicates that your router is not set up optimally. You have to open the corresponding ports so that the necessary data packets can pass through the router/firewall without restrictions.
With NAT type 3 you should not be able to host any game. There could be other problems as well due to the existing restrictions.
I have two internet operators at home. One NAT2 and the other NAT3. NAT2 throws my girlfriend out every 20 minutes, NAT3, hosts and we play normally. Only voice chat doesn’t work on PS4, but we’re sitting next to it. 
My guess is this is with steam more that the Gen Zero game. Just lost connection while playing co-op and steam is also offline at the same time.
Im able to join my bro at the game but the bots turn invisible and drop no loot 4 me might that be cuz we play on the same network and have to adjust the ip ports like 4 playng destiny ill try it c if it works it might also fix some other issues that people may or may not have yet annyway the game is epic so keep up the good work i hope ull find the solution the the problems soon
Platform: PS5
Error/Bug: Connection to host timed out
Reproduction: invite/try joining
A friend of me and i started playing when the game was in PS+. I bought almost every DLC, he did too but not this runner dlc. Turned out it kicked me out of multiplayer every 2-5mins - resolving: both dlc or none. I i resetted my runner to “factory” and it worked flawlessly.
Today another friend tried to join us. We cant join each other at all. Every time it says “connection to host timeout”. The funny part is that we both can join another friend but we cant see us. We dont see us in game, not in “Teams” not anywhere at all. But i can drop stuff for him. Mobs added by him are completely unvisible for me and they dont inflict any damage - in my game. For him i die every couple seconds. I can see when he opens a door, a container or something but everything else isnt “there”. It sounds kind of funny but its really annoying.
This is the first game in many years of multiplayer games that i experienced something like this.
We even tried the port method but nothing worked at all. Other games work without any problems (he has Type 3 and i have type 2). Even regular voice party chat does work normally.
Dies anyone have/had the same problem and any solution for it?
It’s a known issue since the companion update and the Team is working hard to deliver a fix with the next regular update.
Multiplayer currently has sync issues for everyone, especially regarding bases, enemies and the companion. This often leads into crashes or desync timeouts. Try not to use companions and bases in multiplayer until it’s fixed, then it should work fine in general.