# Runtime error with the launcher **URL:** \ **Category:** Getting Started & Setup\ **Tags:** unreal-engine, 0xc000007b, dll-missing, editor, question\ **Created:** [November 3, 2017, 3:25am UTC](https://forums.unrealengine.com/t/runtime-error-with-the-launcher/408617 "2017-11-03T03:25:32Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![anonymous\_user\_3e077f9f](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_3e077f9f](https://forums.unrealengine.com/u/anonymous_user_3e077f9f)\ **Post date:** [November 3, 2017, 3:25am UTC](https://forums.unrealengine.com/t/runtime-error-with-the-launcher/408617/1 "2017-11-03T03:25:32Z")
Hello; i get an editor runtime error (0xc000007b) when i try to run UnrealEngineLauncher.exe Dwalker brought some missing dll: API-MS-WIN-CORE-WINRT-ERROR-L1-1-0.DLL API-MS-WIN-CORE-WINRT-L1-1-0.DLL API-MS-WIN-CORE-WINRT-ROBUFFER-L1-1-0.DLL API-MS-WIN-CORE-WINRT-STRING-L1-1-0.DLL DCOMP.DLL IESHIMS.DLL API-MS-WIN-CORE-FIBERS-L1-1-1 AQPROF.DLL VSPERF140.DLL VTUNEAPI.DLL VTUNEAPI32E.DLL i have repaired every microsoft redistribuable c++ and got directx aswell and i dont know how to use procmon properly so i dont know how to find my problem Here are my dxdiag; dwalker and procmon logs (procmon logs have UnrealEngineLauncher.exe and EpicgamesLauncher.exe as filters) thank you for your time! procmon1 procmon dwalker dxdiag ---
**Author:** ![anonymous\_user\_3e077f9f](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_3e077f9f](https://forums.unrealengine.com/u/anonymous_user_3e077f9f)\ **Post date:** [November 4, 2017, 2:03am UTC](https://forums.unrealengine.com/t/runtime-error-with-the-launcher/408617/2 "2017-11-04T02:03:31Z")
upgraded the os to win10 but the problem is still showing,! also i cant find these dll in syswow64 or system 32 folders here are the logs from the launcher launcher