UnityException: Could not find any valid targets to launch on for Android

Please I'm desesperate it's been two weeks and I can't solve this problem. This happens when I try to build and run a APK in my Oculus Go. At the beginning I could install the APK without problem but one day this appeared and I couldn't do it anymore.

UnityException: Could not find any valid targets to launch on for Android
UnityEditor.PostprocessBuildPlayer.LaunchOnTargets (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget buildTarget, UnityEditor.Build.Reporting.BuildReport buildReport, System.Collections.Generic.List`1[T] launchTargets) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:235)
UnityEditor.Android.PostProcessAndroidPlayer.Launch (UnityEditor.BuildTarget target, System.String installPath, UnityEditor.Build.Reporting.BuildReport report) (at <4132c5c2cd7b45b09ef33302ae416489>:0)
UnityEditor.Android.AndroidBuildPostprocessor.LaunchPlayer (UnityEditor.Modules.BuildLaunchPlayerArgs args) (at <4132c5c2cd7b45b09ef33302ae416489>:0)
UnityEditor.PostprocessBuildPlayer.Launch (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget buildTarget, System.String path, System.String productName, UnityEditor.BuildOptions options, UnityEditor.Build.Reporting.BuildReport buildReport) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:166)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)

I tried using unity 2019.1.6f1, 2019.1.4f1, 2019.1.0b10
Already changed minimun API level to 21 and maximum 27 (oreo)
I already reinstalled 4 times andorid studio and SDK tools because I saw it in other forum

 

??????

 

Running into the same error, however for the Quest. I built with Unity 2019.1.0f2 and had it working the on Go, and then was able to get it working on the Quest by changing a few lines in the manifest. As soon as I uploaded it to a release channel, I started having problems (conflict with keys I think) and now can't get it to build and run at all. I'm going to look at the manifest to make sure the action settings are correct and see if I can get it to work on the Go again.

My best guess is that a directory path is broken somewhere or there's an issue in the manifest settings. This is one of my first projects so everything feels like an aim in the dark. Keep you posted if I find any tips.

 

Thanks Quirkeley if you find any solution please contact me

 

Had the same error message but in my case it was simply a newer version of the app already installed on my device. I uninstalled the app on my device and then everything worked. (I had accidentally opened an alpha version of Unity before and tested the app but forgot to uninstall it after).

 

I've had the same issue for a few weeks now (@Quirkeley now you mention it I think it may also be the first time I successfully pushed up a build to a distribution channel). Deploying manually with adb (adb install -r <filename>) works fine, so it's definitely not a device incompatibility issue.

 

1. Maybe has nothing to do with this, but before I found my answer I manually install the latest SDK, see included picture. (Does not happen automatically if you just select to update the Android Studio).

2. Another tip is to change the Bundle Version Code (increase the value).

 

Anyone have an updated answer to this issue? I am getting the same error messages on build suddenly with the Quest.

 

Same problem

 

I had this today, I did resolve this by uninstalling the app on my Android Device and clearing the data in the configAPK which you'll also find in the Android (I develop with React Native and Xamarin as well so those are tricks I've picked up)

 

I had the same issue. The problem was that there was a plugin folder which has a manifest file inside it. I think it probably because this manifest file is conflict with Unity itself. Everything was right after my gf deleted the plugin folder. She is a talent girl (forced)

 

Just had the same issue too, seemed to resolve after I restarted my android device, such a relief

 

Just delete the apks and do it

 

Had the same issue after initializing a custom build Gradle, still not sure what caused the issue.

I deleted the out apk from my phone (where I was running the build), restarted my phone, and re-build the game; now everything works as expected.

 

It's August 2020 and still having these issues, even Oculus are retiring the Go.

 

This error disappeared for me when I set the Minimum API Level value on my device to, before that the value was higher.

 

So, I had this problem with my .apk,
first I looked to: https://stackoverflow.com/questions...ror-on-almost-every-device-i-try-my-unity-app and test everything.
but no chance!
then as @AndBje says, 2. Another tip is to change the Bundle-Version Code (increase the value) ! and it works! thanks, @AndBje .

 

Had the same problem. Tried everything from this tred, and at least solved by setting in Player settings as mentioned in
mostafanastary reply link (thank you for that link!):
Scripting backend: IL2CPP
Api compatibility level: .NET Standard 2.0
Target Architectures: ARMv7, ARM64, x86 (deprecated).
Install location: Automatic
Write Permission: Internal

It's seems to me, there must be some gide in Unity docs with all this suggestions "What to do, if could not launch on Android debug". The https://docs.unity3d.com/ru/current/Manual/TroubleShootingAndroid.html suggests nothing useful. "Installing to an incompatible device" or "Installing to a device running a version of Android lower than the Minimum API Level in your Player settings". Looking for a simple answer to a frequent question for several days is somewhat discouraging.

 

this was my solution!!!

 

I had to untick this

 

Having the same problem. Deleting the app on the device works but I shouldn't have to do this every build.

 

I was getting this error along with com.android.ddmlib.InstallException: Failed to establish session. Hence I freed up some space and it worked. Just free up some space ie. free up 600MB + Space required for your app after installation + size of your app bundle (APK or AAB as the bundle is copied to the device before installation).

 

For me it was the usb tethering. Once I shut off Internet sharing via USB . problem vanished.

 

I was accidentally building an .abb file. I had "Build App Bundle (Google Play)" checked.

 

I had the same issue! and still don't know what happen?

 

I had this same error. Fixed it by going to settings/apps on my device and selecting the unity app, then uninstalling from there. Uninstalling from the home page or app listings on device doesn't work, it must be done from settings. I've noticed the failure to re-install on non-unity apps as well - if developing apps for android, uninstall from settings.