title: Windows 8 exception "System.Security.SecurityException"
body: <p>I am starting to develop windows 8 app. I am new in windows 8 app development. I have one page i.e. <strong>MainPage.xaml</strong>. I am not able to see the design view. It gives an error. </p>
  
  <p><strong>System.Security.SecurityException</strong></p>
  
  <blockquote>
    <p>Designer could not be started because of a permissions issue on the drive to which it is installed. Please check the permissions of the folder before trying to start the designer.
       at Microsoft.Expression.HostUtility.Platform.AppContainerProcessDomainFactory.CreateDesignerProcess(String applicationPath, String clientPort, Uri hostUri, IDictionary environmentVariables, Int32&amp; processId, Object&amp; processData)
       at Microsoft.Expression.DesignHost.Isolation.Primitives.ProcessDomainFactory.ProcessIsolationDomain..ctor(ProcessDomainFactory factory, IIsolationBoundary boundary, AppDomainSetup appDomainInfo, FrameworkName targetFramework, String identifier, String baseDirectory)
       at Microsoft.Expression.DesignHost.Isolation.Primitives.ProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)
       at Microsoft.Expression.HostUtility.Platform.AppContainerProcessDomainFactory.CreateIsolationDomain(IIsolationBoundary boundary)
       at Microsoft.Expression.DesignHost.Isolation.Primitives.IsolationBoundary.Initialize()
       at Microsoft.Expression.DesignHost.Isolation.Primitives.IsolationBoundary.CreateInstance[T](Type type)
       at Microsoft.Expression.DesignHost.Isolation.IsolatedExportProvider.Initialize()
       at Microsoft.VisualStudio.ExpressionHost.Services.VSIsolationService.CreateExportProvider(IIsolationTarget isolationTarget, ICatalogFactory catalogFactory, IExportFilter filter)
       at Microsoft.Expression.DesignHost.Isolation.IsolationService.CreateLease(IIsolationTarget isolationTarget)
       at Microsoft.Expression.DesignHost.IsolatedDesignerService.CreateLease(IIsolationTarget isolationTarget, CancellationToken cancelToken, DesignerServiceEntry&amp; entry)
       at Microsoft.Expression.DesignHost.IsolatedDesignerService.IsolatedDesignerView.CreateDesignerViewInfo(CancellationToken cancelToken)
       at Microsoft.Expression.DesignHost.Isolation.IsolatedTaskScheduler.InvokeWithCulture[T](CultureInfo culture, Func<code>2 func, CancellationToken cancelToken)
       at Microsoft.Expression.DesignHost.Isolation.IsolatedTaskScheduler.&lt;&gt;c__DisplayClassa</code>1.b__6()
       at System.Threading.Tasks.Task`1.InnerInvoke()
       at System.Threading.Tasks.Task.Execute()</p>
  </blockquote>
  
  <p>I have given administrative rights to the folders. But I am not getting why this error is getting? </p>
  
  <p>Can someone please help me to solve this ?</p>