ERROR: Platform Android is not a valid platform to build. Check that the SDK is installed properly

AntoineOMEGA · October 22, 2020, 8:51pm

I’m trying to use RunUAT.bat to build a plugin but it fails and displays this error message - ERROR: Platform Android is not a valid platform to build. Check that the SDK is installed properly.

I have used Visual Studio Installer to get Android SDK but that didn’t fix the issue. Will downloading Android Studio fix it or is the issue caused by something else?

ubershmekel · December 28, 2020, 8:58am

I had to install the right version of the SDK, NDK and JDK to get around the Platform Android is not a valid platform to build error.

JDK - NOT JDK 15, but rather JDK 8, for which the Oracle site is broken. You have to click “accept” and then take the link for the JDK from the button’s nexturl eg from https://www.oracle.com/webapps/redirect/signon?nexturl=https://download.oracle.com/otn/java/jdk/8u202-b08/1961070e4c9b4e26a04e7f5a083f551e/jdk-8u202-windows-x64.exe just take the https://download.oracle.com/otn/java/jdk/8u202-b08/1961070e4c9b4e26a04e7f5a083f551e/jdk-8u202-windows-x64.exe ending
SDK was installed when I installed android studio
NDK I had too look in UE_4.25\Engine\Extras\Android\SetupAndroid.bat to find that I was supposed to get version 21.1.6352462. To install this, I had to go to Android Studio → SDK Manager → SDK Tools → check the “Show Package Details” box → Then get the right version of the NDK installed.

After all this - I had to go into the Unreal Engine project settings, Platform, Android SDK, then set all 3 of the above settings to their correct directory.

anonymous_user_c92da606 · December 28, 2020, 12:25pm

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lehuan5062 · December 4, 2021, 2:35am

This works, thanks!
Edit: until I get the “cmd.exe failed…” error.

Online_Learner_XWYN1 · May 1, 2022, 7:11am

In my experience, UE needs to use the default JDK of Android Studio 4.0
I installed open jdk8 because I am trying unity
Uninstalling open JDK and reinstalling Android Studio 4.0 will be useful,

GizehTriana · January 30, 2023, 8:07am

You can find earlier JDK here.

Java Archive Downloads - Java SE 8 (oracle.com)

ngominhtri068 · October 20, 2023, 2:28am

I fix it by my own way.

i install new version of .Net. i use ue5.2 so sysem recomend me install .NET 6.0.302. Find it and install it.

31286×494 13.6 KB
I choose newer SDK and NDK. This is my screenshot

You can install New API version in Android studio in configure setting.
I dont know if it work for you. But i guest you should try

chuklov · November 22, 2023, 9:56pm

I have found the issue in UE5.3 that it sets NDK link incorrectly after each build and you need to set it again. You do not need to reboot your Windows, but you need to set it again after each build.

UE 5.X becomes a stupid engine with lots of issues. I have submitted a bug, but for the last 5 years, I have never gotten an email that the bug has been added, reviewed, or solved.

Marvellamas · December 11, 2023, 10:50am

Hi
where i can find this settings?

chuklov · December 19, 2023, 8:56pm

This is Windows environment variables: this should help

fortwos · January 17, 2024, 8:53am

This works, thanks!
NDK_ROOT settings.

raianlp · June 27, 2024, 10:58pm

This is the solution! thank you ma man!
Unreal 5.4 seems to be really bad reading path with both “/” and "". I replaced all “/” with "" and the issue has been fixed!