Unreal Apps isn't opening.

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Hi, I hope someone can help me with the issue we’re currently encountering. Some of our apps in unreal suddenly stop working, more specifically, isn’t opening when I tried to open them.

We’re using Windows 10, and the unreal apps are windows build.

Does anyone familiar with this issue, or is there a fix for it? Please let me know.

Thanks.

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that seems odd… i may not be able to fix it but, you should make sure you have the right settings in your export that work for you,

this video by a youtuber that is very helpful could help you understand or maybe fix a mistake + explain some things for you incase, hope this helps

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But it’s weird because this is working/opening before on Windows 10.

I tried all of the possible debugging I can think of, such as disabling antivirus, windows defender, updating GPU, etc., and still not working.

Does anyone report or post an issue like this before?

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ok i think i know what can help you…

(i didnt write this i just found this in another post about the same issue)

Solved the issue! Avast was messing with UE4. Now if you too are using it, chances are you suffers from the same problem or it is also related to your own anti-virus acting the same.

"Here’s what I’ve done, but remember I’m french so i’m translating my own UI and it might not be exactly accurate:

  • Open Avast user interface
  • Go into Parameters
  • In the pop-up menu, go into “active protection”
  • then into “Files Agent” customisation
  • In the second pop-up menu, go into “exclusion (or exceptions in english maybe)”
  • Add the entire unreal editor folder (should be “/program files/epic games/*”) and exclude from writing/reading/execute
  • Do the same for the folder in which you put your cooked and packaged projects

And voila! It solved it for me. Since I had the exact same issues than you all, chances are high that you suffers the same issue with avast or your own anti-virus"

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if that dont work heres another post on this issue

Packaged Unreal projects will not open on my PC - Unreal Engine / Platform & Builds - Unreal Engine Forums