# Launcher doesn't start - "Application was unable to start properly (0xc000007b)" **URL:** \ **Category:** Platform & Builds\ **Tags:** launcher-not-startin, unreal-engine, crash, UE4, question\ **Created:** [June 30, 2015, 3:27pm UTC](https://forums.unrealengine.com/t/launcher-doesnt-start-application-was-unable-to-start-properly-0xc000007b/323562 "2015-06-30T15:27:29Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Ownelek\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Ownelek\_1](https://forums.unrealengine.com/u/Ownelek_1)\ **Post date:** [June 30, 2015, 3:27pm UTC](https://forums.unrealengine.com/t/launcher-doesnt-start-application-was-unable-to-start-properly-0xc000007b/323562/1 "2015-06-30T15:27:29Z")
Hi. Today I installed Unreal Engine on my PC and EpicGamesLauncher doesn’t start. Error message is: “Application was unable to start properly (0xc000007b)”. Specs: CPU: AMD FX-6300 RAM: 8GB GPU: NVIDIA GeForce GTX 750 OS: Windows 7 Home Premium SP1 Here is dxdiag: [------------------System Information------------------Time of this report: - Pastebin.com](http://pastebin.com/1pyd6YLQ) Windows is up-to-date. I got no idea where the problem lies. ---
**Author:** ![anonymous\_user\_6e7b421a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6e7b421a](https://forums.unrealengine.com/u/anonymous_user_6e7b421a)\ **Post date:** [June 30, 2015, 5:25pm UTC](https://forums.unrealengine.com/t/launcher-doesnt-start-application-was-unable-to-start-properly-0xc000007b/323562/2 "2015-06-30T17:25:47Z")
Hey Ownelek, I am assuming have you already taken a look at our ‘Launcher Troubleshooting Guide’ already, since you provided us with your ‘dxdiag’ as requested in the guide? > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — https://unrealcommunity.wiki/! You will be able to find content from... Let me know if you solved your issue or if you still need further help. Thanks, ---
**Author:** ![Stephen\_Ellis](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/stephen_ellis/32/1210665_2.png) [@Stephen\_Ellis](https://forums.unrealengine.com/u/Stephen_Ellis)\ **Post date:** [June 30, 2015, 7:05pm UTC](https://forums.unrealengine.com/t/launcher-doesnt-start-application-was-unable-to-start-properly-0xc000007b/323562/3 "2015-06-30T19:05:15Z")
Hi Ownelek, Error 0xc000007b is an application error code on Windows that appears when a program fails to launch or run. This is generally encountered when an application tries to open on a computer that’s missing important components or runtime files. We have had users encounter this issue before with the Epic Games Launcher, and unfortunately it can be difficult to identify exactly which runtime files your computer may be missing or have corrupted (example: [Error Running Launcher (0xc000007b) - Getting Started - Unreal Engine Forums](https://answers.unrealengine.com/questions/197175/error-running-launcher-0xc0000007b.html)). I suggest reviewing this post, because although we were unable to resolve that particular user’s issue, we did provide suggestions which often do help, such as reinstalling Service Pack 1. If you are unable to come to any solutions, you are welcome to provide logs from Dependency Walker as suggested, and we can try to investigate. As mentioned though, these issues don’t originate from the Launcher software, but from missing or corrupted files on your system. Cheers ---
**Author:** ![Ownelek\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Ownelek\_1](https://forums.unrealengine.com/u/Ownelek_1)\ **Post date:** [June 30, 2015, 9:13pm UTC](https://forums.unrealengine.com/t/launcher-doesnt-start-application-was-unable-to-start-properly-0xc000007b/323562/4 "2015-06-30T21:13:34Z")
Hi again. I ran DependencyWalker and it seems some libraries are missing. I can try downloading them from internet but I’m not sure if its best way to solve this. They are propably part of some bigger package but I dont know which one. Here is log: [\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*| System Information |\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* - Pastebin.com](http://pastebin.com/DJ4rn1nr) ---
**Author:** ![Ownelek\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Ownelek\_1](https://forums.unrealengine.com/u/Ownelek_1)\ **Post date:** [July 1, 2015, 9:05am UTC](https://forums.unrealengine.com/t/launcher-doesnt-start-application-was-unable-to-start-properly-0xc000007b/323562/5 "2015-07-01T09:05:08Z")
ok problem solved. the problem was with msvcr120.dll being 32bit not 64bit. idk why tho … ---
**Author:** ![Stephen\_Ellis](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/stephen_ellis/32/1210665_2.png) [@Stephen\_Ellis](https://forums.unrealengine.com/u/Stephen_Ellis)\ **Post date:** [July 2, 2015, 5:13pm UTC](https://forums.unrealengine.com/t/launcher-doesnt-start-application-was-unable-to-start-properly-0xc000007b/323562/6 "2015-07-02T17:13:18Z")
Excellent. Glad you were able to figure it out. ---
**Author:** ![anonymous\_user\_bb2f2dc2](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_bb2f2dc2](https://forums.unrealengine.com/u/anonymous_user_bb2f2dc2)\ **Post date:** [February 22, 2016, 6:29pm UTC](https://forums.unrealengine.com/t/launcher-doesnt-start-application-was-unable-to-start-properly-0xc000007b/323562/7 "2016-02-22T18:29:55Z")
can you explain to me how you got it working? And the steps you did? ---
**Author:** ![anonymous\_user\_6e7b421a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6e7b421a](https://forums.unrealengine.com/u/anonymous_user_6e7b421a)\ **Post date:** [February 23, 2016, 4:57pm UTC](https://forums.unrealengine.com/t/launcher-doesnt-start-application-was-unable-to-start-properly-0xc000007b/323562/8 "2016-02-23T16:57:41Z")
Hey bounsir31, Have you attempted to uninstall the launcher completely, and then doing a fresh re-install to see if that resolved your issue? Thanks,