# \#build-lighting **URL:** https://forums.unrealengine.com/tag/build-lighting/5259.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [La textura de un mesh se pone NEGRO al acercarse después de presionar "Build Lighting Only" ](https://forums.unrealengine.com/t/la-textura-de-un-mesh-se-pone-negro-al-acercarse-despues-de-presionar-build-lighting-only/2724825)
**Author:** [@agusvarbar](https://forums.unrealengine.com/u/agusvarbar)\ **Replies:** 0\ **Last updated:** [May 27, 2026, 9:46pm UTC](https://forums.unrealengine.com/t/la-textura-de-un-mesh-se-pone-negro-al-acercarse-despues-de-presionar-build-lighting-only/2724825 "2026-05-27T21:46:18Z")
Hola, necesito su ayuda, tengo un escenario listo y realice un “Build Lighting Only”, pero hay un mesh que se pone negro la textura cuando te acercas con la cámara. ¿Saben como arreglarlo? Por si acaso, no hay un mesh d… --- ## [After opening each level, using the built-in sky system causes yellow areas to appear, and yesterday there was also a strange blue halo. Is this a new bug in UE5.4? ](https://forums.unrealengine.com/t/after-opening-each-level-using-the-built-in-sky-system-causes-yellow-areas-to-appear-and-yesterday-there-was-also-a-strange-blue-halo-is-this-a-new-bug-in-ue5-4/2570710)
**Author:** [@Destiny.jenny](https://forums.unrealengine.com/u/Destiny.jenny)\ **Replies:** 0\ **Last updated:** [June 22, 2025, 1:21pm UTC](https://forums.unrealengine.com/t/after-opening-each-level-using-the-built-in-sky-system-causes-yellow-areas-to-appear-and-yesterday-there-was-also-a-strange-blue-halo-is-this-a-new-bug-in-ue5-4/2570710 "2025-06-22T13:21:34Z")
After opening each level, using the built-in sky system causes yellow areas to appear, and yesterday there was also a strange blue halo. Is this a new bug in UE5.4? --- ## [How to build lighting form C++ or BP?](https://forums.unrealengine.com/t/how-to-build-lighting-form-c-or-bp/461247)
**Author:** [@anonymous\_user\_2709d010](https://forums.unrealengine.com/u/anonymous_user_2709d010)\ **Replies:** 1\ **Last updated:** [September 26, 2023, 11:49am UTC](https://forums.unrealengine.com/t/how-to-build-lighting-form-c-or-bp/461247 "2023-09-26T11:49:33Z")
I have a huge open world setup for which I would like to build the light information for selected levels only in a batch during night time. I want to be able to perform some pre-build operation like setting up the direct… --- ## [Why when I build light its taking hours?](https://forums.unrealengine.com/t/why-when-i-build-light-its-taking-hours/310710)
**Author:** [@AttemptD](https://forums.unrealengine.com/u/AttemptD)\ **Replies:** 26\ **Last updated:** [September 20, 2023, 12:43pm UTC](https://forums.unrealengine.com/t/why-when-i-build-light-its-taking-hours/310710 "2023-09-20T12:43:36Z")
I know…this area is huge…and I have lightmass volume surrounding it… But after 2 hourss it was only at 2 percent. I mean the area isnt like skyrim big…it’s not at all. would anything else slow down the light building p… --- ## [Why is my static mesh turning black?](https://forums.unrealengine.com/t/why-is-my-static-mesh-turning-black/451498)
**Author:** [@NickoliVonKrain](https://forums.unrealengine.com/u/NickoliVonKrain)\ **Replies:** 2\ **Last updated:** [December 11, 2022, 4:09pm UTC](https://forums.unrealengine.com/t/why-is-my-static-mesh-turning-black/451498 "2022-12-11T16:09:28Z")
I am working on making a simple low poly game, and am using blender to model my assets. I made a little tree and was going to import it just to test it out in the engine. I imported the fbx file, edited the material, eve… --- ## [Unreal Engine freezes on build lighting](https://forums.unrealengine.com/t/unreal-engine-freezes-on-build-lighting/548973)
**Author:** [@sebalv70](https://forums.unrealengine.com/u/sebalv70)\ **Replies:** 15\ **Last updated:** [May 5, 2022, 10:35pm UTC](https://forums.unrealengine.com/t/unreal-engine-freezes-on-build-lighting/548973 "2022-05-05T22:35:42Z")
I’ve been trying to find an answer to this for weeks. I think I read every single post in this forum and others and still don’t have an answer, plus spending dozens of hours, and a company IT guy spending two hours and s… --- ## [Disable only lighting screen messages not all](https://forums.unrealengine.com/t/disable-only-lighting-screen-messages-not-all/425707)
**Author:** [@anonymous\_user\_1e016ef3](https://forums.unrealengine.com/u/anonymous_user_1e016ef3)\ **Replies:** 1\ **Last updated:** [March 30, 2022, 9:45am UTC](https://forums.unrealengine.com/t/disable-only-lighting-screen-messages-not-all/425707 "2022-03-30T09:45:40Z")
Hi, is there a way of disabling only the build lighting screen messages but not all. I know about the disable all screen messages but we need them for play and debugging. we MUST be able to remove the lighting ones thoug… --- ## [Missing Lighmass in Importance Volume](https://forums.unrealengine.com/t/missing-lighmass-in-importance-volume/489567)
**Author:** [@KVing](https://forums.unrealengine.com/u/KVing)\ **Replies:** 4\ **Last updated:** [November 8, 2021, 9:14am UTC](https://forums.unrealengine.com/t/missing-lighmass-in-importance-volume/489567 "2021-11-08T09:14:34Z")
Hello everyone, I have an issue with Lightmass. I have all around the room set up a Lightmass Importance Volume. But some Areas are covered with Lightmass Samples in a high density. But a big area are not covered. I tr… --- ## [Static mesh actor has NULL StaticMesh propert](https://forums.unrealengine.com/t/static-mesh-actor-has-null-staticmesh-propert/486896)
**Author:** [@gameMNproduction](https://forums.unrealengine.com/u/gameMNproduction)\ **Replies:** 2\ **Last updated:** [August 2, 2021, 11:03am UTC](https://forums.unrealengine.com/t/static-mesh-actor-has-null-staticmesh-propert/486896 "2021-08-02T11:03:11Z")
I ask for help I have no idea how to fix this problem. The error message “WARNING : Static mesh actor has NULL StaticMesh propert” comes up whenever I try to build the light. I have several static meshes in the given obj… --- ## [Incorrect shadows after build lighting](https://forums.unrealengine.com/t/incorrect-shadows-after-build-lighting/475412)
**Author:** [@Subash4447](https://forums.unrealengine.com/u/Subash4447)\ **Replies:** 5\ **Last updated:** [December 16, 2020, 2:25am UTC](https://forums.unrealengine.com/t/incorrect-shadows-after-build-lighting/475412 "2020-12-16T02:25:45Z")
Hi, I am making a project in unreal engine 4.25.3. I made many models in blender for unreal engine and I have imported everything in unreal engine. When I place models in my level the models have correct shadows as sh… --- ## [Mesh has bad lighting after building light](https://forums.unrealengine.com/t/mesh-has-bad-lighting-after-building-light/468199)
**Author:** [@anonymous\_user\_fb9dc6ac](https://forums.unrealengine.com/u/anonymous_user_fb9dc6ac)\ **Replies:** 4\ **Last updated:** [July 16, 2020, 1:43pm UTC](https://forums.unrealengine.com/t/mesh-has-bad-lighting-after-building-light/468199 "2020-07-16T13:43:50Z")
Hello! Currently I am importing some models I made in Blender. I made a wall that looked perfectly fine before building lighting. However, once I built the lighting, weird shadows appeared (Especially on the crown moldin… --- ## [Build Lighting issue.](https://forums.unrealengine.com/t/build-lighting-issue/299081)
**Author:** [@Tasty\_Snak](https://forums.unrealengine.com/u/Tasty_Snak)\ **Replies:** 22\ **Last updated:** [June 10, 2020, 4:14pm UTC](https://forums.unrealengine.com/t/build-lighting-issue/299081 "2020-06-10T16:14:11Z")
Hi, I have only recently started using UE4 and I’ve come across an issue that I cannot figure out. I’m having a problem with the lighting of my level after I build the lighting. It suddenly becomes super bright for som… --- ## [Basic UV lightmap problem](https://forums.unrealengine.com/t/basic-uv-lightmap-problem/462616)
**Author:** [@Samush](https://forums.unrealengine.com/u/Samush)\ **Replies:** 2\ **Last updated:** [April 29, 2020, 5:45pm UTC](https://forums.unrealengine.com/t/basic-uv-lightmap-problem/462616 "2020-04-29T17:45:25Z")
Hi, I’m doing a VR project about heritage and i’ve modeled all in Blender. Im exporting my .fbx as always and when I import it in UE4 it’s all OK. When i build lights it goes crazy and I don’t know why, I tried to do UV… --- ## [Random Screen freezes, Brushify and a wall of errors](https://forums.unrealengine.com/t/random-screen-freezes-brushify-and-a-wall-of-errors/462240)
**Author:** [@Joshua42777](https://forums.unrealengine.com/u/Joshua42777)\ **Replies:** 2\ **Last updated:** [March 9, 2020, 1:56pm UTC](https://forums.unrealengine.com/t/random-screen-freezes-brushify-and-a-wall-of-errors/462240 "2020-03-09T13:56:40Z")
Hello, Hopefully I’m posting this in the right place. I just bought the moorlands pack for brushify. I decided to take it for a spin. I made some OK landscapes, however I get a wall of errors. (the same error over … --- ## [Help! build lighting grayed out](https://forums.unrealengine.com/t/help-build-lighting-grayed-out/326544)
**Author:** [@anonymous\_user\_3808597a](https://forums.unrealengine.com/u/anonymous_user_3808597a)\ **Replies:** 4\ **Last updated:** [September 13, 2019, 10:18pm UTC](https://forums.unrealengine.com/t/help-build-lighting-grayed-out/326544 "2019-09-13T22:18:44Z")
So I turned off allow static lighting in the project settings and now Build Lighting Only is grayed out on the build drop down bar and I can’t Click it!! Is this normal? Or did I mess up? --- ## [What is the official method to build lighting using level streaming](https://forums.unrealengine.com/t/what-is-the-official-method-to-build-lighting-using-level-streaming/452229)
**Author:** [@flamesyul](https://forums.unrealengine.com/u/flamesyul)\ **Replies:** 0\ **Last updated:** [July 14, 2019, 9:10am UTC](https://forums.unrealengine.com/t/what-is-the-official-method-to-build-lighting-using-level-streaming/452229 "2019-07-14T09:10:29Z")
I tried to follow this methods: Separate lighting between streamed levels - Rendering - Unreal Engine Forums https://forums.unrealengine.com/development-discussion/rendering/116128-building-lighting-on-streaming-levels-… --- ## [Texture turns dark in viewport and after Building Lights](https://forums.unrealengine.com/t/texture-turns-dark-in-viewport-and-after-building-lights/292163)
**Author:** [@Hybreed\_1](https://forums.unrealengine.com/u/Hybreed_1)\ **Replies:** 23\ **Last updated:** [April 17, 2019, 10:30pm UTC](https://forums.unrealengine.com/t/texture-turns-dark-in-viewport-and-after-building-lights/292163 "2019-04-17T22:30:32Z")
Some of my textures turn dark in the viewport and after building the lights. But in the blueprint editor and material editor it appears to be normal. Please Help! alt text --- ## [Error when Building Lighting](https://forums.unrealengine.com/t/error-when-building-lighting/442475)
**Author:** [@ThunderWInteractive](https://forums.unrealengine.com/u/ThunderWInteractive)\ **Replies:** 2\ **Last updated:** [January 31, 2019, 7:02pm UTC](https://forums.unrealengine.com/t/error-when-building-lighting/442475 "2019-01-31T19:02:56Z")
I have been able to build lighting before, I need 10,464 objects rebuilt, here is the log: 9:11:17 AM: \[Interface:TryOpenConnection\] Local connection established 9:11:17 AM: \[Job\] Accepted Job 00DFEC28-4BE622FF-F49C1FA… --- ## [Build Unreal Lightmass WITHOUT Source](https://forums.unrealengine.com/t/build-unreal-lightmass-without-source/434817)
**Author:** [@anonymous\_user\_c96ebfb1](https://forums.unrealengine.com/u/anonymous_user_c96ebfb1)\ **Replies:** 0\ **Last updated:** [October 1, 2018, 10:31am UTC](https://forums.unrealengine.com/t/build-unreal-lightmass-without-source/434817 "2018-10-01T10:31:03Z")
Hi, I have a (binary install of UE) project that does not build lighting. I cannot compile the Unreal Lightmass since it never shows up in my project’s SLN. I am also unable to rename the meshes in my scene as there are… --- ## [Maps need lighting rebuilt?](https://forums.unrealengine.com/t/maps-need-lighting-rebuilt/421668)
**Author:** [@Kingspayde420](https://forums.unrealengine.com/u/Kingspayde420)\ **Replies:** 1\ **Last updated:** [August 22, 2018, 5:04pm UTC](https://forums.unrealengine.com/t/maps-need-lighting-rebuilt/421668 "2018-08-22T17:04:48Z")
Hi, i recently wanted to build my lighting for my level however when i do, it stays at 0 and then it gives me this. It goes on and on whenever I try to build my lighting. Anyone got a solution? I have an image of the er… --- ## [Build Lighting Inception Problem](https://forums.unrealengine.com/t/build-lighting-inception-problem/430069)
**Author:** [@Trcioo](https://forums.unrealengine.com/u/Trcioo)\ **Replies:** 0\ **Last updated:** [July 23, 2018, 4:41pm UTC](https://forums.unrealengine.com/t/build-lighting-inception-problem/430069 "2018-07-23T16:41:16Z")
I’m trying to package a playable demo for a blueprint which I have on the Market Place but when I try to Build Light it gives the Error that I need to Build Light, not joking, it’s the actual error (see the image below). … --- ## [Engine locks up with trying to build lighting](https://forums.unrealengine.com/t/engine-locks-up-with-trying-to-build-lighting/425743)
**Author:** [@anonymous\_user\_38a8818e1](https://forums.unrealengine.com/u/anonymous_user_38a8818e1)\ **Replies:** 0\ **Last updated:** [May 23, 2018, 6:25am UTC](https://forums.unrealengine.com/t/engine-locks-up-with-trying-to-build-lighting/425743 "2018-05-23T06:25:37Z")
I’m having this issue when trying to build any sort of lighting in UE4. It seems to happen regardless of the engine version. I hit Build lighting and the engine freezes up when trying to connect to the Swarm Agent. I’ve… --- ## [Dark Textures on Geometry](https://forums.unrealengine.com/t/dark-textures-on-geometry/425137)
**Author:** [@UncleChubby](https://forums.unrealengine.com/u/UncleChubby)\ **Replies:** 1\ **Last updated:** [May 15, 2018, 8:55am UTC](https://forums.unrealengine.com/t/dark-textures-on-geometry/425137 "2018-05-15T08:55:44Z")
When I make a box(static object) and apply a material all is well. When I Make a Geometry, convert it into a static, then apply the same material too it the material is too dark. --- ## [Build Lighting Extremely long times](https://forums.unrealengine.com/t/build-lighting-extremely-long-times/422126)
**Author:** [@DePLuG](https://forums.unrealengine.com/u/DePLuG)\ **Replies:** 1\ **Last updated:** [April 8, 2018, 3:35pm UTC](https://forums.unrealengine.com/t/build-lighting-extremely-long-times/422126 "2018-04-08T15:35:16Z")
So i have created a small project and the building lighting takes extremely long. so long that it looks like its frozen at 2% then at least half an hour later it goes to 3% and so on. Is there any way to fix this problem… --- ## [Static lighting missing when building from command line](https://forums.unrealengine.com/t/static-lighting-missing-when-building-from-command-line/420524)
**Author:** [@anonymous\_user\_39142901](https://forums.unrealengine.com/u/anonymous_user_39142901)\ **Replies:** 0\ **Last updated:** [March 22, 2018, 5:43am UTC](https://forums.unrealengine.com/t/static-lighting-missing-when-building-from-command-line/420524 "2018-03-22T05:43:47Z")
Hi, I’m using the following command line to build lighting D:\\p4\\UE4\\Code\\Engine\\Binaries\\Win64\\UE4Editor-Cmd.exe D:\\p4\\UE4\\Code\\Project\\Project.uproject -run=resavepackages -buildlighting -MapsOnly -ProjectOnly -Allow… --- ## [Blender Static Mesh turns "BLACK" after building Lighting](https://forums.unrealengine.com/t/blender-static-mesh-turns-black-after-building-lighting/417548)
**Author:** [@Jacob9moon00](https://forums.unrealengine.com/u/Jacob9moon00)\ **Replies:** 6\ **Last updated:** [February 17, 2018, 3:09am UTC](https://forums.unrealengine.com/t/blender-static-mesh-turns-black-after-building-lighting/417548 "2018-02-17T03:09:50Z")
( The Light\_Map\_Res is “128” and the Light\_Map\_Coord\_Res is “1” ) “LightMapRes 115 does not work either” I Imported from blender. Other than changing the values LightMapRes & LightMapCoordIndex, How do I stop the Stati… --- ## [Why does my Meshes turn Black when I Build Lighting?](https://forums.unrealengine.com/t/why-does-my-meshes-turn-black-when-i-build-lighting/416343)
**Author:** [@Jacob9moon00](https://forums.unrealengine.com/u/Jacob9moon00)\ **Replies:** 0\ **Last updated:** [February 3, 2018, 10:58pm UTC](https://forums.unrealengine.com/t/why-does-my-meshes-turn-black-when-i-build-lighting/416343 "2018-02-03T22:58:55Z")
When I build my Lighting, Most of the Meshes either turn black or darker then what their suppose to be. I don’t know if this is a Mesh or Material Problem. I have set the Light Map Resolution to 512 and the Light Map Coo… --- ## [Building Light freezing computer](https://forums.unrealengine.com/t/building-light-freezing-computer/317178)
**Author:** [@anonymous\_user\_1f88e3631](https://forums.unrealengine.com/u/anonymous_user_1f88e3631)\ **Replies:** 6\ **Last updated:** [January 26, 2018, 3:12am UTC](https://forums.unrealengine.com/t/building-light-freezing-computer/317178 "2018-01-26T03:12:24Z")
Hey everyone, I have been using the editor for quite some time on this computer with no issues, but today it seems that Unreal Engine is completely freezing up my computer when building light. I’ve tried re installing U… --- ## [Lighting problems (incorrect shadows)](https://forums.unrealengine.com/t/lighting-problems-incorrect-shadows/408629)
**Author:** [@endbored](https://forums.unrealengine.com/u/endbored)\ **Replies:** 4\ **Last updated:** [December 2, 2017, 12:04pm UTC](https://forums.unrealengine.com/t/lighting-problems-incorrect-shadows/408629 "2017-12-02T12:04:45Z")
Please look at the pictures, the shadow and light is somehow not correct. I dont know why this happens. The scene has a lightmass importance volume covering the whole level. The walls and floor are all static meshes, … --- ## [Freeze, Starting up Swarm Connection... (100%)](https://forums.unrealengine.com/t/freeze-starting-up-swarm-connection-100/309480)
**Author:** [@Colossalcake](https://forums.unrealengine.com/u/Colossalcake)\ **Replies:** 4\ **Last updated:** [September 28, 2017, 4:28am UTC](https://forums.unrealengine.com/t/freeze-starting-up-swarm-connection-100/309480 "2017-09-28T04:28:02Z")
I’ve searched around a lot for this and have tried a lot of different solutions without any luck. So far I’ve: Deleted Swarm cache Turned off Windows Firewall and Avast Re-installed Unreal Engine Obtained the latest … [Next page](https://forums.unrealengine.com/tag/build-lighting/5259.md?match_all_tags=true&page=1&tags%5B%5D=build-lighting)