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Class not registered 0x80040154 (REGDB_E_CLASSNOTREG)) RRS feed

  • Question

  • Hi! I'm facing this Little trouble, and I don't know how to solve it.

    I'm developing an UWP app.

    In the MainPage.xaml designer page I'm seeing this:

    System.Runtime.InteropServices.COMException
    Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
       at Microsoft.VisualStudio.DesignTools.HostUtility.AppPackage.PackageService.ProxyHostAppPackage.get_Package()
       at Microsoft.VisualStudio.DesignTools.HostUtility.AppPackage.PackageService.RegisterPackageForProject(IHostProject project)
       at Microsoft.VisualStudio.DesignTools.DesignerHost.HostServices.HostProject.PreparePackageForActivation()
       at Microsoft.VisualStudio.DesignTools.HostUtility.Platform.AppContainerProcessDomainFactory.CreateDesignerProcess(String applicationPath, String clientPort, Uri hostUri, IDictionary environmentVariables, Int32& processId, Object& processData)
       at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.ProcessIsolationDomain..ctor(ProcessDomainFactory factory, IIsolationBoundary boundary, AppDomainSetup appDomainInfo, IIsolationTarget isolationTarget, String baseDirectory)
       at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.ProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)
       at Microsoft.VisualStudio.DesignTools.HostUtility.Platform.AppContainerProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)
       at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.Initialize()
       at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Primitives.IsolationBoundary.CreateInstance[T](Type type)
       at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedObjectFactory.Initialize()
       at Microsoft.VisualStudio.DesignTools.DesignerHost.Services.VSIsolationService.CreateObjectFactory(IIsolationTarget isolationTarget, IObjectCatalog catalog)
       at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolationService.CreateLease(IIsolationTarget isolationTarget)
       at Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.CreateLease(IIsolationTarget isolationTarget, CancellationToken cancelToken, DesignerServiceEntry& entry, IServiceProvider serviceOverrides)
       at Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.IsolatedDesignerView.CreateDesignerViewInfo(CancellationToken cancelToken)
       at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.InvokeWithCulture[T](CultureInfo culture, Func`2 func, CancellationToken cancelToken)
       at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.IsolatedTaskScheduler.<>c__DisplayClass10_0`1.<StartTask>b__0()
       at System.Threading.Tasks.Task`1.InnerInvoke()
       at System.Threading.Tasks.Task.Execute()

    This is my XAML code:

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

        </Grid>
    </Page>

    How can I solve this?

    • Moved by Stanly Fan Friday, October 6, 2017 6:51 AM from windows form
    Monday, September 25, 2017 1:52 PM

All replies

  • @Juan Pablo Pola,

    It seems your code do not have any problem. What about new projects? If new project reproduce the same issue, I will think it is a Visual Studio problem first.

    Best regards,

    Barry


    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.

    Tuesday, September 26, 2017 1:49 AM
  • @Juan Pablo Pola,

    Any updates regarding this issue?

    Best regards,

    Barry


    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, September 28, 2017 2:34 AM