# Swarm Agent Error:This operation is currently limited to supporting files less than 2 gigabytes in size

**URL:** <https://forums.unrealengine.com/t/swarm-agent-error-this-operation-is-currently-limited-to-supporting-files-less-than-2-gigabytes-in-size/481845>\
**Category:** Rendering\
**Tags:** swarm, baked-lighting, swarm-agent, baking, unreal-engine, question\
**Created:** [April 13, 2021, 3:18pm UTC](https://forums.unrealengine.com/t/swarm-agent-error-this-operation-is-currently-limited-to-supporting-files-less-than-2-gigabytes-in-size/481845 "2021-04-13T15:18:06Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Levantail](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/levantail/32/88718_2.png) [@Levantail](https://forums.unrealengine.com/u/Levantail)\
**Post date:** [April 13, 2021, 3:18pm UTC](https://forums.unrealengine.com/t/swarm-agent-error-this-operation-is-currently-limited-to-supporting-files-less-than-2-gigabytes-in-size/481845/1 "2021-04-13T15:18:06Z")

</div>

Hello,

I was working on my project and suddenly from some point when i try to build static lighting I get this in UE4 Output log:

```
    MapCheck: Error: WorldSettings_1 Maps need lighting rebuilt

```

And swarm log:

```
    4:39:40 PM: [Interface:OpenChannel] Error: System.IO.IOException: The file is too long. This operation is currently limited to supporting files less than 2 gigabytes in size.
       at System.IO.File.InternalReadAllBytes(String path, Boolean checkHost)
       at NSwarm.FSwarmInterface.OpenChannel(String ChannelName, EChannelFlags ChannelFlags)
    4:39:40 PM: [Job] Job has failed! Job executable didn't exit cleanly. Exit code: 2

```

Does anyone know how to fix that ?