Unreal Engine 5 - Packaging error on Windows 10

Packaging a project works well in UE4 on my pc, but when I try to build a project in UE5 I get the following message:

“The SDK for Windows is not installed properly, which is needed to generate data. Check the SDK section of the Launch On menu in the main toolbar to update SDK.”

I have never had an error like this before, and generally work in Blueprint. Where do I find this ‘Launch On’ menu to rectify the situation?

Thank you for the assistance.


I had the same problem


Thank you PasserBy, I did install it, but unfortunately I still get the same error message.

Is there something I am missing, do I have to go somewhere to run this ‘Launch On’ toolbar?

(this is probably going to be something obvious, that will make me feel dumb)

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I don’t really know

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Thank you, I will continue the conversation there. That way once It is solved, all the information is centralized. Your help has been very much appreciated.

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Thank you, after all, this worked for me.

Try this link, I downloaded the universal SDK installer and then it worked for me.



Thanks for the help

This link also helped me solve this exact issue. thanks a lot!

You have to install .net core 3.1.0 runtime environment. If you try to package the project when it gives you the “SDK not installed” the output in the log gives you a link to download it. And fix the problem.

Download .NET Core 3.1 Desktop Runtime (v3.1.24) - Windows x64 Installer (microsoft.com)


This did it for me ultimately. Thanks!

Worked for me too! Many thanks!

Worked great! Thankyou!!

this solved it for me too


worked ty

This did not work for me :frowning:

Too, I have the same issue using installed build

Worked for me! Thank u so much :smiling_face_with_three_hearts:

thank you, it help a lot