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Why I need windows 8.1 sdk?

after last 2 or 3 update of UE4 launcher the engine request to me win sdk 8.1 for compile my project… before this issue never touch me… why now i need to install an extra sdk for compiling my project? it stop to compile after returning ERROR: Windows SDK v8.1 must be installed in order to build this target.
is totally nonsense I’m on windows 7 why I need to install win 8.1 sdk…

Same here… Im on windows 10!

I am in same situation, I install win 8.1 SDK but my question is if the game will be run in others PCs with win 7 without win 8.1 SDK installed?

Believe the plan was to phase this out, but it hasn’t happened.
(Think there was a Tim Sweeney email directly addressing it etc).
I agree totally btw. The less invasive MS prerequisites the better.
Wonder what the Linux flavor of Unreal uses to get around this…

Believe the plan was to phase this out, but it hasn’t happened.
(Think there was a Tim Sweeney email directly addressing it…).
After Win10 upgrade scam, favor having less MS installed glue.

Wonder what the Linux flavor of Unreal uses to get around this?

yeah seems a bit weird. Isnt this for metro apps? was like wtf do I need this for unreal engine for.

I don’t know but I’m gonna take a guess that it is for Windows Mobile phone support. Hope they remove the dependency soon.