# Build hangs 90 seconds before starting

**URL:** <https://forums.unrealengine.com/t/build-hangs-90-seconds-before-starting/479308>\
**Category:** Rendering\
**Tags:** swarm, building-lighting, build, unreal-engine, question\
**Created:** [February 24, 2021, 3:34am UTC](https://forums.unrealengine.com/t/build-hangs-90-seconds-before-starting/479308 "2021-02-24T03:34:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![FunAndFriendly](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@FunAndFriendly](https://forums.unrealengine.com/u/FunAndFriendly)\
**Post date:** [February 24, 2021, 3:34am UTC](https://forums.unrealengine.com/t/build-hangs-90-seconds-before-starting/479308/1 "2021-02-24T03:34:54Z")

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Hi, I’m having issues with the swarm.

When I click “Build”, it hangs on this dialog for 90 seconds (using a timer). Then it builds the lighting.

Occasionally, if I click “Build” again relatively soon (5-10 seconds), I can “score a double” and the build happens straight away.

![330703-untitled.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/8/c/c8cc0042b449cee008bb8f7c2057bfaa2cb18ebf.png)

How can I make it start without this delay?  
Or, how can I make the connection stay for hours (so I can repeatedly score a double.)

Here are the logs: [Swarm Logs - 46f06a5c](https://controlc.com/46f06a5c)

It’s on a fresh install of windows 10 from this morning.

Thank you!

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<div class="post-metadata">

**Author:** ![FunAndFriendly](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@FunAndFriendly](https://forums.unrealengine.com/u/FunAndFriendly)\
**Post date:** [March 4, 2021, 3:10am UTC](https://forums.unrealengine.com/t/build-hangs-90-seconds-before-starting/479308/2 "2021-03-04T03:10:56Z")

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I’m using a source build and had to do two things:

1. Open Swarm agent → Settings → Distrubituion → EnableStandaloneMode = True

2. In Visual Studio, build the UnrealLightmass target

I also followed these instructions to create a Swarm Coordinator on localhost, but I dont think it was necessary.

> **[Unreal Swarm](https://docs.unrealengine.com/4.27/en-US/RenderingAndGraphics/Lightmass/UnrealSwarmOverview/)**
>
> An overview of Unreal Swarm, our task distribution system for computationally expensive applications, including Unreal Lightmass, the high-quality static global illumination solver in Unreal Engine 4.