XamlParseException when loading the Designer in a brand new project

  • Thread starter Thread starter DevStacklysm
  • Start date Start date
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DevStacklysm

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I've searched everywhere for the answer but none of the questions in this website (or StackOverflow) solved it. Everytime I create a new Windows Phone 8.1 project I get the XamlParseException, even when I choose the Blank App project. I will list everything I tried.

  • Reinstall VS 2015
  • Reinstall VS 2015 without the SDK and then download it later with the emulators
  • Enable Developer Mode on Windows
  • Disable Project Code
  • Open the .xaml files with the Automatic Editor Selector and XAML Designer
  • Enable XAML Designer in the Options, of course
  • Update Windows 10 (note: I couldn't upgrade to 1809, I'm stuck with 1803)
  • Enable Hypervisor on the BIOS
  • Reboot computer
  • Adding the 'ThemeResources.xaml' manually on the project
  • Build, Rebuild and Clean the solution
  • Using different .NET Framework versions

Here is my App.xaml code:

<Application
x:Class="App2.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App2">
</Application>


Here is the MainPage.xaml code:

<Page
x:Class="App2.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App2"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Grid>

</Grid>
</Page>

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