fatal error C1083: Cannot open include file: 'dte80a.tlh': No such file or directory

Development Programming & Scripting
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1

Hi all,

I just downloaded UE 5.6.1 and started a new project and got below error when it compiles:

fatal error C1083: Cannot open include file: ‘dte80a.tlh’: No such file or directory
include “dte80a.tlh”

Can someone help?

Thanks

2

Hey @SungshikYim! Welcome back!

So this problem is pretty rare, but apparently is a corruption in the files from back in the UE4 days… From what I understand, you need to delete “Engine\Intermediate\Build\Win64\UE5Editor\Development\VisualStudioDTE”, then rebuild the engine, but that folder doesn’t exist for me, personally. Possibly just reinstall Unreal Engine. It’s something to do with Microsoft Visual Studio, so maybe update that as well and then reinstall.

Hope that helps, let us know your progress!

3

Thank you. Uninstall and reinstalling UE5 did the trick.