# Failed to Create Session

**URL:** <https://forums.unrealengine.com/t/failed-to-create-session/304294>\
**Category:** Multiplayer & Networking\
**Tags:** Networking, online-session, unreal-engine, session, Blueprint, question\
**Created:** [January 18, 2015, 3:14pm UTC](https://forums.unrealengine.com/t/failed-to-create-session/304294 "2015-01-18T15:14:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![anonymous\_user\_6f3ce7471](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6f3ce7471](https://forums.unrealengine.com/u/anonymous_user_6f3ce7471)\
**Post date:** [January 18, 2015, 3:14pm UTC](https://forums.unrealengine.com/t/failed-to-create-session/304294/1 "2015-01-18T15:14:10Z")

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Hi I tried to create an online session with the create session node. hooked up everything fine.  
on debugging ther error i found the error “net driver already exists” .  
can someone shed some light on this

 ![27076-screenshot_38.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/4/2/f4269c9ab475d2354db7a738a2b160d2ab90979f.png)

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<div class="post-metadata">

**Author:** ![Nesjett](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/nesjett/32/918631_2.png) [@Nesjett](https://forums.unrealengine.com/u/Nesjett)\
**Post date:** [January 28, 2015, 11:05am UTC](https://forums.unrealengine.com/t/failed-to-create-session/304294/2 "2015-01-28T11:05:50Z")

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I found the solution, you have to add this on DefaultEngine.ini  
[OnlineSubsystem]  
DefaultPlatformService=Null

Here you will find more info:

> **[4.6 Preview and Create Session](https://forums.unrealengine.com/questions/141764/46-preview-and-create-session.html)**
>
> I setup the node to accept 4 connections, and when I fire it in game, the function simply fails and I have no information as to why. Is this expected behavior for the preview and to be fixed in the official release? Or should this work?