# UnrealEngine-NvRTX\_Caustics Visual studio 2017 Build Error

**URL:** <https://forums.unrealengine.com/t/unrealengine-nvrtx-caustics-visual-studio-2017-build-error/490085>\
**Category:** Platform & Builds\
**Tags:** build, unreal-engine, dll-missing, packaging-projects, question\
**Created:** [October 21, 2021, 12:13pm UTC](https://forums.unrealengine.com/t/unrealengine-nvrtx-caustics-visual-studio-2017-build-error/490085 "2021-10-21T12:13:26Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![1394DDD](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@1394DDD](https://forums.unrealengine.com/u/1394DDD)\
**Post date:** [October 21, 2021, 12:13pm UTC](https://forums.unrealengine.com/t/unrealengine-nvrtx-caustics-visual-studio-2017-build-error/490085/1 "2021-10-21T12:13:26Z")

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Hello everyone. so im trying to build this unreal project. i folowed the instrucktions that came with the project but [Link][2] when i try to build the project i get this output message.

 ![350744-bild-2021-10-21-135953.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/e/f/defc0e6f997f1df289ebaf2babbaeecd23918b6b.png)

 ![350745-bild-2021-10-21-141524.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/f/71fffb00a5e763ed4609e91aa1caec23693cd20c.png)

then i try to run the project by clicking on Lokal Windows Debugger and this is what i got

 ![350743-bild-2021-10-21-135449.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/2/5/f25df8deef3e56f1af373e464c54427d0cce9780.png)

i think it has something to do with DLL. or so presiqusite issues. the output message show way to many missing dll. mabee there is a package/tool that sets up all the missing dll. at once that i never heard off or i did something wrong when bulding the project.  
im not that experianced with building ue4 projects. and could use some help.  
Thanking in Advance.