Error: Launch failed! Unknown Cook Failure

Hello I was following this Documentation: [Packaging Android Projects in Unreal Engine | Unreal Engine 5.1 Documentation: Packaging Android Projects in Unreal Engine | Unreal Engine 5.1 Documentation

So I can packaging or preview my game on my android device but when I press one of those

but it’s always gives me this error:

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you need to scroll up the log and find the red lines higher up.
that will show you where the error is.

Do you mean this?

and I have this red line

Greetings @BDO365 !

Just so you’re aware, this topic has been moved from the Community - Showcase - Game Development forum category to the Development - Platform & Builds forum category.

The Showcase forums are for artists and game devs to showcase/display their works-in-progress. We have other forum categories for questions and discussions.

Remember, when posting, please review the categories to ensure your topic is posted in the most relevant space.

Happy Developing!

'- Your Friendly Neighborhood Moderator :smiley:

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where can I get the answer to the problem because I have the same issue right now? Exactly like this one

I don’t know if this will help, but I posted this earlier and it may or not be useful:

Just my solution to this problem from a few weeks ago. I had moved my assets between folders months prior and I was receiving the same error messages stopping the packaging. Where the assets had previously been, there were 3Kb (as opposed to the proper 33Kb) files with the asset’s old names. These seemed to be acting as shortcuts(?) and were the source of the errors. I deleted them and it resolved the errors and a host of other nonfatal warnings.

I would look in the file explorer if there are any “artifact” files that the code is trying to package that are no longer relevant.

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Alright, i try this method and get back to you, thanks for the feedback :slight_smile: