# Join session doesn't work **URL:** \ **Category:** Multiplayer & Networking\ **Tags:** bug, joining-session, unreal-engine, session, bug-report, UE4, question\ **Created:** [July 14, 2015, 11:52pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274 "2015-07-14T23:52:04Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Blue\_man](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Blue\_man](https://forums.unrealengine.com/u/Blue_man)\ **Post date:** [July 14, 2015, 11:52pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/1 "2015-07-14T23:52:04Z")
Hi, I have problem with sessions in blueprints. Server can create session with no problem and client can find session but joining session doesn’t work. I got few pictures of my blueprint : Player controller : [http://i.imgur.com/Cl3BLrl.png?1](http://i.imgur.com/Cl3BLrl.png?1) , [http://i.imgur.com/wZwnpnq.png?1](http://i.imgur.com/wZwnpnq.png?1) GameInstance : [http://i.imgur.com/CFeoL4E.png?1](http://i.imgur.com/CFeoL4E.png?1) Menu widget : [http://i.imgur.com/QfJ8VZa.png?1](http://i.imgur.com/QfJ8VZa.png?1) , [http://i.imgur.com/ijc411N.png?1](http://i.imgur.com/ijc411N.png?1) \*ini.file : [http://i.imgur.com/qV94U9C.png?1](http://i.imgur.com/qV94U9C.png?1) I found this lines in log files : GetHostByName failed (SE\_NO\_DATA) LogOnline:Warning: NULL: Invalid session info for session Game in GetResolvedConnectString() LogOnline:Warning: NULL: Can’t start an online game for session (Game) that hasn’t been created And I have same problem in multiplaye shootout. ![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/3/c/73c1dddf0e937b1c736fa390bc52f2270897da12.jpeg) I have this problem with every project I made. One moderator () was helping , I made simple project with sessions and it wasn’t working for me,I send him that project and on his end was working fine. > **[Host/Join session](https://forums.unrealengine.com/showthread.php?76320-Host-Join-session&p=332445)** > > This is from AnswerHub. Hi, I asked this already with no luck. I followed every youtube video,twitch livestream ( Multiplayer Shootout) and I had no luck with Host and join session.Hosting is working,searching is working but joining is not. Please... ![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/4/2/a/42a6cadacd857c79d6feb1fb492a2452e9dc7fa0.jpeg) And I uploaded a video on . Here is that simple project. https://.nz/#!O0hWSbQA!nMg7p9\_71JQIX1-o9\_yfaxnYgujpEF6zH5GldXil\_9g I had simila problem with 4.7 > **[Ue 4 network crash](https://forums.unrealengine.com/questions/204080/ue-4-network-crash.htmlhtml)** > > Description: In version 4.7.3 when I try to play with 2 players (listen and client) engine just crash without any warnings.I tried this in version 4.6.1 and it works.This appears no matter did I open blank project,templates or my project. Crash... I can’t post log files becouse I can’t get to my PC right now.I will post log files tomorrow. I don’t know if this is something on my end or if this is a bug with engine. ---
**Author:** ![Blue\_man](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Blue\_man](https://forums.unrealengine.com/u/Blue_man)\ **Post date:** [July 15, 2015, 11:28am UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/2 "2015-07-15T11:28:36Z")
Anyone,any ideas? ---
**Author:** ![Blue\_man](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Blue\_man](https://forums.unrealengine.com/u/Blue_man)\ **Post date:** [July 15, 2015, 6:55pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/3 "2015-07-15T18:55:37Z")
Please help. ---
**Author:** ![anonymous\_user\_33800a51](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_33800a51](https://forums.unrealengine.com/u/anonymous_user_33800a51)\ **Post date:** [July 15, 2015, 7:23pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/4 "2015-07-15T19:23:11Z")
Hi man, Thanks for your report. We’ll take a look at issue and links you’ve provided as soon as we can, and get back to you if we have any questions. ---
**Author:** ![Blue\_man](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Blue\_man](https://forums.unrealengine.com/u/Blue_man)\ **Post date:** [July 15, 2015, 7:24pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/5 "2015-07-15T19:24:04Z")
Thank you 🙂 ---
**Author:** ![anonymous\_user\_33800a51](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_33800a51](https://forums.unrealengine.com/u/anonymous_user_33800a51)\ **Post date:** [July 16, 2015, 9:17pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/6 "2015-07-16T21:17:45Z")
Hey man, I wasn’t able to reproduce this in a new project nor in project you provided, so it would appear this is on your end. I’m going to check in with network developers here and see if there’s anything we can adjust to make this work for you. Thanks for your patience. ---
**Author:** ![anonymous\_user\_33800a51](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_33800a51](https://forums.unrealengine.com/u/anonymous_user_33800a51)\ **Post date:** [July 16, 2015, 9:22pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/7 "2015-07-16T21:22:28Z")
Also, related to issue you were having in 4.7: that should no longer be an issue in 4.8. Are you still running with " multihome=127.0.0.1" in your commandline? ---
**Author:** ![anonymous\_user\_33800a51](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_33800a51](https://forums.unrealengine.com/u/anonymous_user_33800a51)\ **Post date:** [July 16, 2015, 9:27pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/8 "2015-07-16T21:27:27Z")
Hey, also try putting this in your DefaultEngine.ini: ``` [Core.Log] LogNet=verbose LogOnline=verbose ``` and then /attach log from file after running through create/find/join process. Thanks! ---
**Author:** ![Blue\_man](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Blue\_man](https://forums.unrealengine.com/u/Blue_man)\ **Post date:** [July 16, 2015, 10:07pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/9 "2015-07-16T22:07:37Z")
Thank you for helping me! In 4.8 I don’t use multihome anymore. I will upload log files tomorrow becouse I can’t get to my pc right now. And once again thank you. ---
**Author:** ![Blue\_man](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Blue\_man](https://forums.unrealengine.com/u/Blue_man)\ **Post date:** [July 17, 2015, 10:08am UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/10 "2015-07-17T10:08:39Z")
I got it working!!! I dont know how but it works. I installed new updates for windows and now it works. I m so happy right now,I was trying to get this to work for 2 weeks. Thank you for helping me!! 🙂 ---
**Author:** ![Shepik](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Shepik](https://forums.unrealengine.com/u/Shepik)\ **Post date:** [March 15, 2016, 11:37am UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/11 "2016-03-15T11:37:21Z")
We have same problem, but it is reproduce only on one concrete PC with cyrillic symbols in name. It is reproduce in editor and in cooked version. Installation updates for windows didn’t help us. Do have somebody any ideas how fix it? Product Version: UE 4.9 ---
**Author:** ![anonymous\_user\_e729f54e](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_e729f54e](https://forums.unrealengine.com/u/anonymous_user_e729f54e)\ **Post date:** [March 21, 2016, 2:12pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/12 "2016-03-21T14:12:04Z")
Hello , Could you run through suggestion given by and let me know if this resolves your issue? ---
**Author:** ![Shepik](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Shepik](https://forums.unrealengine.com/u/Shepik)\ **Post date:** [March 22, 2016, 10:24am UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/13 "2016-03-22T10:24:40Z")
It’s doens’t work. Here is our log, could it will help to find problems. ---
**Author:** ![anonymous\_user\_e729f54e](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_e729f54e](https://forums.unrealengine.com/u/anonymous_user_e729f54e)\ **Post date:** [March 23, 2016, 2:35pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/14 "2016-03-23T14:35:47Z")
Thank you for additional information, I have a few more questions for you that will help narrow down what issue it is that you are experiencing. Quick questions: 1. Can you reproduce this issue in a clean project? 2. If so, could you provide a detailed list of steps to reproduce this issue on our end? 3. Could you provide and code/ screen shots of blueprints that may be involved with this issue? ---
**Author:** ![Shepik](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Shepik](https://forums.unrealengine.com/u/Shepik)\ **Post date:** [March 23, 2016, 2:46pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/15 "2016-03-23T14:46:59Z")
1. We reproduced it in our project and in “Shooter example”. If need we can create empty project with “Host Session” button. 2. We just press “Host Game” button. No more other additional steps for “Shooter Example” 3. I don’t think so. But, we has this problem at only one particular device, maybe we can give any diagnostic data from this device? ---
**Author:** ![anonymous\_user\_e729f54e](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_e729f54e](https://forums.unrealengine.com/u/anonymous_user_e729f54e)\ **Post date:** [March 24, 2016, 6:22pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/16 "2016-03-24T18:22:29Z")
I tested this on our end, and I was not be able to reproduce this issue. I was able to join a session as expected. Does this issue also occur in 4.10 version of shooter game? ---
**Author:** ![anonymous\_user\_e729f54e](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_e729f54e](https://forums.unrealengine.com/u/anonymous_user_e729f54e)\ **Post date:** [March 30, 2016, 7:27pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/17 "2016-03-30T19:27:21Z")
Hello , We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing issue you reported, please respond to this message with additional information and we will offer further assistance. Thank you. ---
**Author:** ![Shepik](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Shepik](https://forums.unrealengine.com/u/Shepik)\ **Post date:** [April 4, 2016, 9:32am UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/18 "2016-04-04T09:32:02Z")
Yes it does. ---
**Author:** ![anonymous\_user\_e729f54e](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_e729f54e](https://forums.unrealengine.com/u/anonymous_user_e729f54e)\ **Post date:** [April 4, 2016, 6:22pm UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/19 "2016-04-04T18:22:14Z")
What device are you using when you are having this issue? Could you provide your dxdiag? ---
**Author:** ![Shepik](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Shepik](https://forums.unrealengine.com/u/Shepik)\ **Post date:** [April 5, 2016, 11:26am UTC](https://forums.unrealengine.com/t/join-session-doesnt-work/325274/20 "2016-04-05T11:26:09Z")
Here is our DxDiag [Next page](https://forums.unrealengine.com/t/join-session-doesnt-work/325274.md?page=2)