Seemingly out of nowhere, my Azure pipeline that ran the dotnet publish command for a MAUI project is failing with the error Resources/Styles/Colors.xaml : error : The name 'Resources' is reserved and cannot be used.

The target of the project is net8.0-ios. The pipeline installs the .NET 8.0.100 SDK, which it has always done since it was created. It uses mac os 13 and xCode 15.2 – both of which haven’t changed either. This builds fine locally on a mac, with the .NET 8.0.100 sdk.

From what I can see the only thing that has changed is the version of the .NET core command line task that runs the publish command – in the last successful build it was 2.242.0 and it is now 2.242.1 (this is not something I have explicitly changed). No code has changed, no nuget packages have been updated or anything of the sort.

After looking at the error I had a look at my csproj and noticed it had a section for compiling Colors.xaml – which some of my other MAUI projects (whose pipelines did run) did not have, so I removed it.

  <ItemGroup>
    <MauiXaml Remove="ResourcesStylesColors.xaml" />
  </ItemGroup>
  <ItemGroup>
    <BundleResource Include="ResourcesStylesColors.xaml">
      <Generator>MSBuild:Compile</Generator>
    </BundleResource>
  </ItemGroup>

After making this change, the build now passes. However, upon delivery to app store connect I am faced with the infamous ITMS-90078: Missing Push Notification Entitlement warning. I have read this can be caused by 3rd party libraries, but as I mentioned previously, none of my nuget package versions have updated and there hasn’t been any code changes. My best guess is this has come from the AppCenter nuget package (which I will be removing soon, as AppCenter is being retired), but I can’t prove this is the case until I remove it. I still don’t understand why this happened all of a sudden. Would the change in .NET Core task version be enough to have caused these issues? I’m just trying to understand What has happened here.