I bumped into an issue and I had to look around a bit to find the solution. Hopefully, with this post I can help others (who, just like me, don’t read Release Note thoroughly enough) out as well 🙂

The problem

All of a sudden reports started to come in reporting that users weren’t able to install the latest Android version of a .NET MAUI app.

In the Google Play Store, they got a message similar to this:

Your device isn’t compatible with this version.

After digging in the Google Play Store Console, I saw this:

The app can’t be installed on the device is because it doesn’t support the required arm64-v8a and x86_64 ABIs 🤔

When looking at the history of this Android app’s releases, I notice that up to a point the App Bundle contained this information:

It clearly shows arm64-v8a, armeabi-v7a, x86, x86_64.

And then, after migrating to .NET 9, this is showing in the Google Play Console:

As you can see, it only mentions arm64-v8a, x86_64.

The cause

Turns out, I overlooked this in the .NET 9 release notes: https://learn.microsoft.com/en-us/dotnet/maui/whats-new/dotnet-9?view=net-maui-9.0#64-bit-architectures-by-default   😬

The solution

Luckily, the fix is simple, just add this to your csproj file:

<PropertyGroup Condition="'$(TargetFramework)'=='net9.0-android'">
    <RuntimeIdentifiers>android-arm;android-arm64;android-x86;android-x64</RuntimeIdentifiers>
</PropertyGroup>

When submitting the app to the Play Store, it now shows arm64-v8a, armeabi-v7a, x86, x86_64 again, as before migrating to .NET 9.