# Epic Games Launcher 0xc000007b Error **URL:** \ **Category:** Platform & Builds\ **Tags:** unreal-engine, 0xc000007b, dll-missing, bug-report, question\ **Created:** [March 7, 2018, 7:04pm UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167 "2018-03-07T19:04:01Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![AndrewD517](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AndrewD517](https://forums.unrealengine.com/u/AndrewD517)\ **Post date:** [March 7, 2018, 7:04pm UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/1 "2018-03-07T19:04:01Z")
Hi, Am getting the annoying 0xc000007b Error when trying to launch the Epic Games Launcher on Windows 10 (I have Direct X 12 installed).link text Can anyone who can understand the Dxwalker Logs better than I can, advise which DLL’s / Runtime’s I may need to re-install? Thanks, ---
**Author:** ![anonymous\_user\_362ae06c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_362ae06c](https://forums.unrealengine.com/u/anonymous_user_362ae06c)\ **Post date:** [May 3, 2018, 1:50am UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/2 "2018-05-03T01:50:22Z")
Use the “Windbg” software to run the exe file in debug mode. It is a gui based debugger and shows what steps are being executed. This will help you to figure out what dll files are causing the problem or which step is actually creating the error. You can find the app in the app store as well. ---
**Author:** ![AndrewD517](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AndrewD517](https://forums.unrealengine.com/u/AndrewD517)\ **Post date:** [May 3, 2018, 3:13am UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/3 "2018-05-03T03:13:49Z")
I have the output from that attached, any idea on what DLL is missing there, is it the GLU32 one? Thanks,link text ---
**Author:** ![anonymous\_user\_362ae06c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_362ae06c](https://forums.unrealengine.com/u/anonymous_user_362ae06c)\ **Post date:** [May 3, 2018, 3:27am UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/4 "2018-05-03T03:27:07Z")
1. Try to run the 64 bit version. 2. When the debugger pauses, input the character ‘g’ to continue the execution at the bottom input section. First try these steps and see if it is resolved. ---
**Author:** ![AndrewD517](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AndrewD517](https://forums.unrealengine.com/u/AndrewD517)\ **Post date:** [May 4, 2018, 2:58am UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/5 "2018-05-04T02:58:12Z")
Whenever I’ve installed the Epic Games Launcher, it’s always defaulted to a Win32 Version, even though I have a Windows 10 64 bit. Is there a way to get it to install Win64 instead? ---
**Author:** ![anonymous\_user\_362ae06c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_362ae06c](https://forums.unrealengine.com/u/anonymous_user_362ae06c)\ **Post date:** [May 4, 2018, 3:38am UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/6 "2018-05-04T03:38:37Z")
I also faced the same problem when I had visual studio 2017 installed. But it was solved when uninstall the 2017 version and installed the 2015 visual studio. Also note that you need microsoft viual c++ 2015 redistributable (both x64 and x86 versions) installed. There might be a problem in installation if you have microsoft viual c++ 2017 redistributable then all you need to do is to uninstall the 2017 version and try again. The 0xc000007b error may also arise if you don’t have the necessary dll files. You can search the internet to get those dll files. I used the link given in the following video: [https://www.youtube.com/watch?v=1PbnHBkED4s](https://www.youtube.com/watch?v=1PbnHBkED4s) If all of this does not help then you can try to 32 version using the method that I mentioned earlier. ---
**Author:** ![anonymous\_user\_0df12f74](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_0df12f74](https://forums.unrealengine.com/u/anonymous_user_0df12f74)\ **Post date:** [May 4, 2018, 3:55pm UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/7 "2018-05-04T15:55:28Z")
Looking through your log, it appears you may need to re-install one of the VS C++ Redistributable packages. I would start with the 2015 Redistributable, which you can find here: [https://www.microsoft.com/en-us/download/details.aspx?id=48145](https://www.microsoft.com/en-us/download/details.aspx?id=48145) Here’s a post over on Stack Exchange with a lot of good info if that doesn’t solve your problem. > Hope that helps! ---
**Author:** ![AndrewD517](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AndrewD517](https://forums.unrealengine.com/u/AndrewD517)\ **Post date:** [May 5, 2018, 8:59pm UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/8 "2018-05-05T20:59:14Z")
So I uninstalled the 2015 packages and re-installed them, I didn’t have the 64 2015 previously. Tried to run the launcher, same error. Uninstalled / reinstalled, same error. I uninstalled / reinstalled the 2017 packages, same error, and then uninstalled / reinstalled same error. So i downloaded the DLL’s that were provided on the link and copied / pasted em, same error. However this time it first tried to install an Update for the launcher. So then I uninstalled and reinstalled again. This time it added a Win64 Folder, but when I try the EpicGamesLauncher.exe in both directories, it’ll still do the same error. Even the CrashReportClient.exe, it won’t launch because of that error. I feel like it’s getting closer because of adding the Win64 folder, but still getting the same issue unfortunately. ---
**Author:** ![anonymous\_user\_362ae06c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_362ae06c](https://forums.unrealengine.com/u/anonymous_user_362ae06c)\ **Post date:** [May 6, 2018, 2:42am UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/9 "2018-05-06T02:42:06Z")
I also went through the same ordeal. Try the “WinDBG” method now with the 64 bit exe file and enter “g” in the input when the output of the WinDBG halts. ---
**Author:** ![AndrewD517](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AndrewD517](https://forums.unrealengine.com/u/AndrewD517)\ **Post date:** [May 6, 2018, 7:01pm UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/10 "2018-05-06T19:01:48Z")
Ok I did that, and it started debugging, and then it did this in the code. ModLoad: 00007ff9`a24f0000 00007ff9`a2512000 C:\WINDOWS\SYSTEM32\resourcepolicyclient.dll ModLoad: 00007ff9`73810000 00007ff9`73842000 C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf\_amd64\_38508be23829cd8f\nvdlistx.dll ModLoad: 00007ff9`779b0000 00007ff9`77a9b000 C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf\_amd64\_38508be23829cd8f\nvldumdx.dll ModLoad: 00007ff9`a37e0000 00007ff9`a37f7000 C:\WINDOWS\SYSTEM32\CRYPTSP.dll ModLoad: 00007ff9`a3220000 00007ff9`a3253000 C:\WINDOWS\system32\rsaenh.dll ModLoad: 00007ff9`635e0000 00007ff9`6567d000 C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf\_amd64\_38508be23829cd8f\nvwgf2umx.dll ModLoad: 00007ff9`6af30000 00007ff9`6afb6000 C:\Program Files\NVIDIA Corporation\Ansel\Tools\NvCameraWhitelisting64.dll ModLoad: 00007ff9`4a820000 00007ff9`4ac24000 C:\Program Files (x86)\Epic Games\Launcher\Engine\Binaries\ThirdParty\Windows\DirectX\x64\d3dcompiler\_47.dll ModLoad: 00000000`51220000 00000000`51427000 C:\WINDOWS\SYSTEM32\D3DCOMPILER\_43.dll ModLoad: 00000000`51220000 00000000`51427000 C:\Windows\system32\D3DCOMPILER\_43.dll ModLoad: 00000000`51220000 00000000`51427000 C:\WINDOWS\system32\D3DCOMPILER\_43.dll (2544.32cc): Unknown exception - code c06d007e (first chance) [2018.05.06-18.55.54:630][0]LogWindows: Error: === Critical error: === [2018.05.06-18.55.54:631][0]LogWindows: Error: [2018.05.06-18.55.54:631][0]LogWindows: Error: Fatal error! [2018.05.06-18.55.54:631][0]LogWindows: Error: [2018.05.06-18.55.54:632][0]LogWindows: Error: Unhandled Exception: 0xc06d007e I’m guessing the D3DCOMPILER\_43.dll needs to be replaced? ---
**Author:** ![AndrewD517](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AndrewD517](https://forums.unrealengine.com/u/AndrewD517)\ **Post date:** [May 13, 2018, 9:43pm UTC](https://forums.unrealengine.com/t/epic-games-launcher-0xc000007b-error/419167/11 "2018-05-13T21:43:03Z")
Any ideas on the above?