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Getting error 0xc0000409 while trying to debug my app

    Question

  • Recently I started a new UWP app, based upon the Windows Template Studio project type. I've done a little editing in the MainPage.xaml, nothing really major. I've also added a library project to the solution, so two projects in the solution. Then I built it - everything's fine. But it will not, under any circumstances, run when I'm trying to debug it. And of course it won't run if I try running it in release mode. I've tried Debug|ARM, Debug|x64 and Debug|x86 - all fail with the same result. I don't understand why this is happening , as like I sad there's very little I put into the XAML. In fact, here's the MainPage.xaml file:

    <Page.DataContext>
    	<vm:MainPageViewModel x:Name="ViewModel" />
    </Page.DataContext>
    
    <RelativePanel Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
    
    	<controls:PageHeader x:Name="pageHeader" Content="Salary Conversion"
    						 RelativePanel.AlignLeftWithPanel="True"
    						 RelativePanel.AlignRightWithPanel="True"
    						 RelativePanel.AlignTopWithPanel="True" />
    
    	<Grid RelativePanel.Below="pageHeader">
    		<Grid.RowDefinitions>
    			<RowDefinition Height="*" />
    			<RowDefinition Height="*" />
    			<RowDefinition Height="*" />
    		</Grid.RowDefinitions>
    		<TextBlock TextWrapping="WrapWholeWords"
    				   HorizontalAlignment="Center"
    				   VerticalAlignment="Center">(Instructions got here)</TextBlock>
    		<RelativePanel Grid.Row="1"
    					   Name="salaryValuesPanel"
    					   HorizontalAlignment="Center">
    			<VariableSizedWrapGrid MaximumRowsOrColumns="4"
    								   RelativePanel.AlignBottomWithPanel="True"
    								   Orientation="Horizontal">
    				<TextBlock Text="Hourly:" Margin="10,5"/>
    				<TextBox x:Name="HourlyTextBox" Margin="10,5" />
    				<TextBlock Text="Weekly:" Margin="10,5" />
    				<TextBox x:Name="WeeklyTextBox" Margin="10,5" />
    			</VariableSizedWrapGrid>
    		</RelativePanel>
    		<StackPanel Grid.Row="2"
    					Orientation="Horizontal">
    			<Slider Grid.Row="2"
    				x:Name="TimeStatusSlider"
    				HorizontalAlignment="Center"
    				MinWidth="100"
    				Header="Salary Status"
    				Minimum="25" 
    				Maximum="100" LargeChange="25" />
    			<TextBlock Text="{x:Bind TimeStatusSlider.Value}" />
    		</StackPanel>
    	</Grid>
    
    </RelativePanel>
    

    I've only just started - got a lot more to go. All I'm trying to do is see what it looks like when I run it. Here's the error I get:

    "The program '[17396] SalaryConversion.exe' has exited with code -1073740791 (0xc0000409)."

    So, what's going on here and why does it do this??


    Rod

    Saturday, February 9, 2019 4:09 PM

All replies

  • Hello Rod,

    The error 0xc0000409 means "The system detected an overrun of a stack-based buffer in this application.This overrun could potentially allow a malicious user to gain control of this application". But checking your code I haven't found any line which can raise this problem. Can you run your app in release mode? Can you test with a new fresh project which is built from the defulat UWP template? And finally, is it possible for you to create a simple demo which can reproduce your issue for us?

    Best regards,

    Barry


    MSDN Community Support
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    Monday, February 11, 2019 8:30 AM
    Moderator
  • @Rod,

    Any updates regarding this issue?


    MSDN Community Support
    Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread. If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.

    Thursday, February 14, 2019 1:50 AM
    Moderator
  • Sorry, I haven't had a chance to get back to this. I might not, until the weekend.

    Rod

    Thursday, February 14, 2019 1:44 PM