error MSB6006: "java.exe" exited with code 1.

Question

Hi everyone.
I am trying to develop app with Xamarin.Android in Visual Studio.
I am getting error which is : 1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Xamarin\Android\Xamarin.Android.D8.targets(51,5): error MSB6006: "java.exe" exited with code 1.

I am getting this error after I add Xamarin.Firebase.Auth package.

Here is my all packages in my .csproj:
<ItemGroup>
<PackageReference Include="Xamarin.Android.Support.Design">
<Version>28.0.0.3</Version>
</PackageReference>
<PackageReference Include="Xamarin.Android.Support.v7.AppCompat">
<Version>28.0.0.3</Version>
</PackageReference>
<PackageReference Include="Xamarin.AndroidX.AppCompat" Version="1.2.0.5" />
<PackageReference Include="Xamarin.Build.Download">
<Version>0.4.11</Version>
</PackageReference>
<PackageReference Include="Xamarin.Firebase.Auth">
<Version>60.1142.1</Version>
</PackageReference>
<PackageReference Include="Xamarin.Firebase.Database">
<Version>60.1142.1</Version>
</PackageReference>
<PackageReference Include="Xamarin.Forms">
<Version>5.0.0.2012</Version>
</PackageReference>
<PackageReference Include="Xamarin.Google.Android.Material" Version="1.0.0.1" />
<PackageReference Include="Xamarin.Essentials" Version="1.6.1" />
<PackageReference Include="Xamarin.Google.Guava" ExcludeAssets="all">
<Version>27.1.0</Version>
</PackageReference>
<PackageReference Include="Xamarin.GooglePlayServices.Basement">
<Version>117.6.0</Version>
</PackageReference>
<PackageReference Include="Xamarin.GooglePlayServices.Tasks">
<Version>117.2.1</Version>
</PackageReference>
</ItemGroup>

And this the page where I double clicked the error:
<R8
Condition=" '$(_UseR8)' == 'True' "
ToolPath="$(JavaToolPath)"
JavaMaximumHeapSize="$(JavaMaximumHeapSize)"
JavaOptions="$(JavaOptions)"
JarPath="$(AndroidR8JarPath)"
AndroidManifestFile="$(IntermediateOutputPath)android\AndroidManifest.xml"
OutputDirectory="$(_AndroidIntermediateDexOutputDirectory)"
Debug="$(AndroidIncludeDebugSymbols)"
JavaPlatformJarPath="$(JavaPlatformJarPath)"
ClassesZip="$(_AndroidIntermediateClassesZip)"
JavaLibrariesToEmbed="@(_JavaLibrariesToCompileForApp);@(_InstantRunJavaReference)"
JavaLibrariesToReference="@(AndroidExternalJavaLibrary)"
EnableDesugar="$(AndroidEnableDesugar)"
AndroidSdkBuildToolsPath="$(AndroidSdkBuildToolsPath)"
AcwMapFile="$(_AcwMapFile)"
ProguardCommonXamarinConfiguration="$(IntermediateOutputPath)proguard\proguard_xamarin.cfg"
ProguardGeneratedReferenceConfiguration="$(_ProguardProjectConfiguration)"
ProguardGeneratedApplicationConfiguration="$(IntermediateOutputPath)proguard\proguard_project_primary.cfg"
ProguardMappingFileOutput="$(AndroidProguardMappingFile)"
ProguardConfigurationFiles="@(_ProguardConfiguration)"
EnableShrinking="$(_R8EnableShrinking)"
EnableMultiDex="$(AndroidEnableMultiDex)"
MultiDexMainDexListFile="$(_AndroidMainDexListFile)"
CustomMainDexListFiles="@(MultiDexMainDexList)"
IgnoreWarnings="$(AndroidR8IgnoreWarnings)"
ExtraArguments="$(AndroidR8ExtraArguments)"
/>

I have been researching solutions about this topic since 2 days but I couldnt find it.

Answer 1

Hi TolgaKk,

You can try to change the TargetFramework to Android 11, then rebuild you project. If the error persists, could you provide the build log after setting build output to Detailed.

Best Regards,
Dylan

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