May 2017
I am playing BF1 on a PC and have seen this issue in the past. Then it goes away. It reappeared on Saturday. I was able to play a few games but since then have been seeing the error message: "you have lost the connection to the session". I have tried resetting my Xfinity router, flushing DNS, etc. All to no avail. I believe this is a server side issue, not a local issue on my side of the connection. I have tried repairing the game, uninstalling it and reinstalling it only to get the same error message. Also, I am on the East coast and have noticed recently that I am seeing less and less servers available to play on. Sometimes as little as 5 or 6 servers. Something is not right on EA's side of this. It needs to be addressed and soon....
June 2017
ive been having this problem for days i just unplugged my router and just plugged straight into my modem and it works
July 2017
Hello @Puddlesofstuff and thank you for sharing with us your solution to this problem. Restarting you router can be a good solution for a great deal of connection issues. Enjoy the game and let us know, if there is anything else we can help you with.
Cheers,
Archi
August 2017