Unreal Engine won't launch Error code (0xc000007b)

Development Getting Started & Setup
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41

There are a few issues reported in your log, one that interests me most at moment is this:

[ E ]  MSVCR120.DLL

This means that there was an error installing Microsoft Visual C++ Redistributable Packages for Visual Studio 2013. answer has a link to this redist and describes how to uninstall then reinstall it to fix issue:

“You can find it here: http://www.microsoft.com/en-us/download/details.aspx?id=40784. You should check Add/Remove programs to see if there’s another version listed there and uninstall that first. Thanks again!”

If that doesn’t work, you’ll have to try backing up msvcr120.dll in your c:\windows\ system32 folder, deleting original, and then running Visual C++ Redistributable installer again.

42

I’ve already fixed it before your answer installing vs_professional.exe , thanks for help anyway

43

Hey guys, I just ran into this with dealing with packaged builds. I tried every solution here and it did not work, but I did finally fix it.
I was running a Ship build (32-bit) executable on a 64 bit machine which was causing same error to pop up (after originally replacing specific missing DLL files)

Here is what I did.

-I ran dwalker.exe and found that both MSVCP120.dll and MSVCR120.dll were having problems so I uninstalled 2013 Visual studio Redistributables both 64 and 32 bit (I had both installed)

-I then deleted both DLL files from windows/system32 folder (you guys should back them up_
-Then reinstalled both to see if they would replace missing DLL file (they didn’t)
-I then ran repair of 64 bit one
-problem fixed

Hope that helps someone! very frustrating, has me concerned for distribution when time comes (as someone who is super new to this)

44

No worries man, let me know if it works (I’ll stay active on here so maybe if ■■■■ goes wrong I can lend more of a hand). Did you run Dwalker ?

45

Ok, finally getting time to try to deal with this. This is nuts!

Thanks for heads up , I’m going to try your suggestion cause it’s most recent. This is crazy.

46

Huge problems with mine. Same error and I have tried everything. I have attached my dependency log file hope someone can help me Thanks.

link text

47

Thanks a lot it works, i used dependancy walker to launch unreal, and my problem was msvcr120.dll who was x86, i replace it by 64b version and works fine. finally ouf…was ready to reinstall my pc :slight_smile:

48

i dont get it, here is log, would love if someone could help me with it

49

@Kaninslaktaren, It looks like it is having difficulty loading everything out of your c:\windows\system32 folder. If you look at output, you can see it is not able to load every file with a [ E ] in front of it(there are a ton). I can’t tell if this is because you are using 32 bit version of DependencyWalker or if it is because there is a legitimate problem with that folder. Perhaps you could use 64bit version of DependencyWalker to see if it gives more reasonable output.

50

I’m also having problems understanding log, would you take a look at mine too link text? Thanks!

51

@BenGe89, your log shows that you have an x86 version of following file in your system32 folder: c:\windows\system32\XAPOFX1_5.DLL. If I’m not mistaken, this is one of DirectX DLLs. Backup(rename) that dll and install/repair DirectX again.

52

@DEADBEEF, Thanks for help. Fixed my problem for my desktop computer. But i cant seem to get it on to my Laptop , LOG

53

This is what I saw in your log: [ E ] c:\windows\system32\MSVCR120.DLL
This means that Visual C++ Redistributable Packages for Visual Studio 2013 is not installed properly.

  • Go to this link and get vcredist_x64.exe:
  • Backup(Rename) c:\windows\system32\MSVCR120.DLL
  • Run vcredist_x64.exe and select repair (You could also uninstall/install if you prefer)
  • Make sure a new copy of c:\windows\system32\MSVCR120.DLL is added
54

@0xDEADBEEF
Thank you so much ^^ it runs like a water in river :slight_smile:

55

I got this error too wiht some games and software so here its my log!..link text

56

Hi hotyves,

Your errors seem to be generated for when you are running a Ubisoft product (Flashback.exe). This site is only for support of Unreal Engine 4, and your issue is outside scope of support we can offer. I recommend for help on support site for product you are using.

Cheers

57

here’s my log btw its for visual studio cause its whats giving me problems: log.txt

58

According to your log, your Kernel32.dll files are being detected as 32bit. This may seem counter intuitive but 64bit version of windows should have a 64bit version of this file: c:\windows\system32\KERNEL32.DLL. Your version is 32bit and I’m not sure how you got into that state. In fact, all files in windows\system32 folder should be 64 bit.

59

Repairing 2013 and 2012 worked for me. :slight_smile:

60

so is there anything i can do to fix it?