Attempting to play with a friend, but getting very frequent:

Messages.

These happen when loading from the main menu, or during the game. 

Our internet connection is stable (we are in discord all the time).

We are both using the steam version of the game and playing on Windows 10. 

I've attached the diagnostic html files, but they don't appear to show anything relevant other than 'connection lost'.

I'm happy to provide any other diagnostic information on request.

diagnostics.zip

I've been having this same issue and me and my friend have a stable internet connection.  He has over 900 megabits and I have roughly 200 megatbit download speed.  He has roughly 30 megabit and I have roughly 15 megabit upload speed so I don't think our internet connections are the problem.

This is occurring to us and makes the game unplayable. It happens often. This needs more attention. Sad to see. 

Having the same issue. But only with specific friends.

Same here it really annoying.

Having this issue 100% of the time when hosting. This happens on turn end, after all players have clicked the End Turn button. Disconnects generally start around turn 40-50, but have occurred earlier than that occasionally. They seem to occur with increasing frequency as the game progresses, to the point it disconnects every other turn or so, rendering the game unplayable.

We just have to wait it seems, I hope they fix this soon

Yeah me and my friend has been having this issue aswell, we both play on stream and we both have stable internet connection.
Sad to see, we were looking forward the game so much and we cannot even play together.

I am also having the same issue. Some more details:

* It can happen in game or at game load

* It very often happens at game load when it happened mid-game previously

This game has become unplayable for me. I played for about 3 hours with no issues, then after that my friends and I could not get into a game together at all.

I am having the same exact issue. Just started today after the patch and started suddenly when a friend and I loaded up a game. Then once he got frustrated and left, I loaded up a solo game and then I got the same message playing alone in a different game. Extremely frustrating. I saw another post a few weeks ago, same problem still no resolution.

Getting this issue too. Tend to have to reload to a previous save, then get a few more turns out of it until the next crash. I was really looking forward to seeing what would happen after Medevil era but seems I'm doomed to have the game end there. My friend and I are on GamePass PC version, started a new game after the most recent patch too. We're sharing the same internet connection, which makes the lack of LAN even more frustrating. 

Exactly, around 40-50 turns this error occurs after all player clicks end turn button. Waiting for a solution.

Yep, also having this problem around 50 turns in. Hope they fix this and the desyncs coon.

the multiplayer is broken, fix it.

+1

Fix this please

+1 Having the same issue. 
It does this from lap 20, even if you reload the save, it happens the same way a few minutes later.

(Gamepass verison)

Same here.

More often the game will not start, because of one of us is loosing the connection (not on Skype though) and the AI takes over (in the loading screen).

We need to restart the game over and over and after the fifth restart we are able to play like 3-4 rounds, before we have a forced disconnect. :-(
This is not what I bought the game for... And given that you have programmed Endless Legend, this is a real hit in the face, because you showed, that you are able to program a good and mostly stable multiplayer...