# Build error **URL:** \ **Category:** Platform & Builds\ **Tags:** swarm, build, unreal-engine, UE4, question\ **Created:** [May 14, 2016, 4:20am UTC](https://forums.unrealengine.com/t/build-error/357395 "2016-05-14T04:20:57Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![anonymous\_user\_23a653b0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_23a653b0](https://forums.unrealengine.com/u/anonymous_user_23a653b0)\ **Post date:** [May 14, 2016, 4:20am UTC](https://forums.unrealengine.com/t/build-error/357395/1 "2016-05-14T04:20:57Z")
Hello I am a new user to your engine so I am sorry for my lack of knowledge I am in the first attempt in building a level for a game that I will be working on and learning (from youtube, UE vault, friends) when I save the world that I am working on I save everything, compile when I want to see what the level is like I first run the project. it tells me there are 123 un-built lighting that needs to be done. looking into this I can see that there is a build function. I click on this and await for the process to complete. this gets to 100% and then just hangs, I have tried to see if there is anything on my end that is the issue (RAM, HDD space). Just before you ask I am running 64Gb of 1800 speed ram and I have 6.5 Tb of hdd space out of this there is 5Tb of space free. I let the build to complete (never happened) for 7 hours when I went to sleep. still there at 100% and not doing anything I couldn’t click on the stop nor could I exit the editor. I had to go into the Task manager and then end the process that way. when I re-launched the engine after I reset my computer I went to load the game again and added the information that was missed. again tried and again same issue. I have uninstalled the version that I am using and reinstalled, and also uninstalled the launcher and reinstall. nothing worked and I am at a loss on what to do. ok, I have gone onto my laptop and tried this again, I still get the same issue ☹ Since I will be using my laptop more and more, and I some how broke my screens I will be using this on my laptop I have also save my dxdiag here for you to see link text ---
**Author:** ![anonymous\_user\_23a653b0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_23a653b0](https://forums.unrealengine.com/u/anonymous_user_23a653b0)\ **Post date:** [May 15, 2016, 6:20am UTC](https://forums.unrealengine.com/t/build-error/357395/2 "2016-05-15T06:20:03Z")
![error.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/3X/e/c/ec4319da4025361a9a68dea82c5bbec0eaa08a05.jpeg) ][1] ---
**Author:** ![anonymous\_user\_23a653b0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_23a653b0](https://forums.unrealengine.com/u/anonymous_user_23a653b0)\ **Post date:** [May 16, 2016, 1:03pm UTC](https://forums.unrealengine.com/t/build-error/357395/3 "2016-05-16T13:03:54Z")
Now I am getting build scene not saving going past the 100% on this as well. Am I destined to not do this game with UE4? Warning high text Swarm works on my laptop and I get this when I open up the launcher: 21:04:10: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:13: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:16: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:19: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:22: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:25: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:28: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:31: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:34: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:37: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:40: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:43: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:46: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:49: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:52: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:55: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:04:58: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:01: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:04: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:07: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:10: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:13: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:16: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:19: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:22: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:25: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. 21:05:28: [ERROR] Channel registration failed. Reason: No such host is known , Callstack: at System.Net.Dns.GetAddrInfo(String name) at System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6) at System.Net.Dns.GetHostEntry(String hostNameOrAddress) at System.Runtime.Remoting.Channels.CoreChannel.GetMachineName() at System.Runtime.Remoting.Channels.CoreChannel.GetMachineIp() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel.SetupMachineName() at System.Runtime.Remoting.Channels.Tcp.TcpServerChannel…ctor(Int32 port) at Agent.AgentApplication.Main(String[] args) in D:\BuildFarm\buildmachine\_++UE4+Release-4.11\Engine\Source\Programs\UnrealSwarm\Agent\AgentApplication.cs:line 133. ---
**Author:** ![anonymous\_user\_23a653b0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_23a653b0](https://forums.unrealengine.com/u/anonymous_user_23a653b0)\ **Post date:** [May 18, 2016, 10:21am UTC](https://forums.unrealengine.com/t/build-error/357395/4 "2016-05-18T10:21:18Z")
So I have read that you need to fix the swarm agent, I have done the delete and install of SDK v8.1 and also for windows 10, this hasn’t fixed my issues and I have also fixed my .net as well and downloaded the up to date drivers for this as well and again no fix. I have also deleted the swarm log in %appdata% again no fix. please help ---
**Author:** ![anonymous\_user\_23a653b0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_23a653b0](https://forums.unrealengine.com/u/anonymous_user_23a653b0)\ **Post date:** [May 19, 2016, 2:42pm UTC](https://forums.unrealengine.com/t/build-error/357395/5 "2016-05-19T14:42:44Z")
Does anyone know what I can do? ---
**Author:** ![anonymous\_user\_23a653b0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_23a653b0](https://forums.unrealengine.com/u/anonymous_user_23a653b0)\ **Post date:** [May 19, 2016, 3:56pm UTC](https://forums.unrealengine.com/t/build-error/357395/6 "2016-05-19T15:56:04Z")
Please close this thread, I have fixed the issue. this is due to world settings you need to play around with this to get it to sae. this is what I did to get it done for my lighting, build and also swarm fix. ---
**Author:** ![anonymous\_user\_fcbeec561](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_fcbeec561](https://forums.unrealengine.com/u/anonymous_user_fcbeec561)\ **Post date:** [December 13, 2016, 12:47pm UTC](https://forums.unrealengine.com/t/build-error/357395/7 "2016-12-13T12:47:03Z")
i have the same issue whats ur setting ? ---
**Author:** ![BigBeans1048](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BigBeans1048](https://forums.unrealengine.com/u/BigBeans1048)\ **Post date:** [August 25, 2017, 7:38pm UTC](https://forums.unrealengine.com/t/build-error/357395/8 "2017-08-25T19:38:04Z")
This is still an issue. I have this problem right now on all versions of the engine including 4.17 ![210851-ue4-error.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/1/1/f1138222c323d4f06c7365a17e866b2592f13b9e.png) ---
**Author:** ![anonymous\_user\_db659304](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_db659304](https://forums.unrealengine.com/u/anonymous_user_db659304)\ **Post date:** [December 12, 2020, 7:57pm UTC](https://forums.unrealengine.com/t/build-error/357395/9 "2020-12-12T19:57:35Z")
I have the same error : channel registration failed. reason: no such host is known. I have UE source 4.26.0, build successfully and UEEditor being launched successfully. but when I try to build a sample Game it would stuck at (**Starting up Swarm Connection (100%**)) and SwarmAgent keep throwing this exception : **channel registration failed. reason: no such host is known**. - Working on UE source 4.26.0 - I have checked the TCPView → could not see any process holding 8008 or 8009. - I have two versions of .NET frameworks 4.6.1 & 4.6.2. Anybody have working resolution ? ---
**Author:** ![BigBeans1048](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BigBeans1048](https://forums.unrealengine.com/u/BigBeans1048)\ **Post date:** [December 13, 2020, 2:44am UTC](https://forums.unrealengine.com/t/build-error/357395/10 "2020-12-13T02:44:20Z")
I found a solution that worked for me. It’s weird how this is even an issue. I had weird characters in the name of my pc. All I had to do is change it to a simple name with no spaces and the problem stoped happening. Must have something to do with the swarm client writing to the pc. ---
**Author:** ![anonymous\_user\_db659304](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_db659304](https://forums.unrealengine.com/u/anonymous_user_db659304)\ **Post date:** [December 14, 2020, 8:19pm UTC](https://forums.unrealengine.com/t/build-error/357395/11 "2020-12-14T20:19:17Z")
Hi @BigBeans, what was your PC name earlier ? even I am having this issue and my PC name currently have all numbers (ex:1500003453). I have read somewhere that if PC name have any special chars that could lead to problem but am having all numbers, so am not sure if I have to consider changing the PC name. for some reason its tricky for me to just change the PC name(at least its not easy) to see. please help