Universal Windows Platform

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  1. Enable the Windows 10 Hyper-V Default Switch to work with Cisco AnyConnect

    The following Hyper-V networking Configuration breaks DNS name resolution on the Virtual Machine:
    1. Connecting the host to a non-corporate (remote) WiFi network.
    2. Connecting to the corporate network via Cisco AnyConnect on the host.
    3. Start a VM and connect it to the Default Switch (NAT)

    When a VM is connected to the default switch and the host is connected to the corporate network via Cisco AnyConnect, the VM looses the ability to resolve DNS addresses. The VM is able to ping both public addresses and corporate addresses; however, it is unable to resolve names on either the public…

    155 votes
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      13 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →

      We’re investigating how to best handle VPN and add more configuration around VPN.

      Please:
      1) Upvote if this is important to you. That helps us prioritize.
      2) Let us know which VPN technology you’re using/care most about.
      3) Explain what behavior you’d like to see.

    • Changing DataContext modifies previously bound view model

      Using the fall creator's update version of UWP, it seems that when a data context is changed to a new view model, the previous view model is updated with null values. This is the same as if the DataContext is set to null before changing view models. It doesn't make sense why the bound values are updated when the DataContext is changed.

      1 vote
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        6 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
      • PasswordBox with NumericPin overrides InputScope for other controls

        We are experiencing an issue where the presence of a PasswordBox with a NumericPin InputScope overrides the InputScope of other controls on the page--until the PasswordBox has received focus.
        On a touch screen, this manifests every time a user reaches the first page in our UWP App that has a NumericPin-scoped PasswordBox.
        Repro steps:
        1) Create a new "Blank App" UWP project
        2) Add the XAML below to MainPage.xaml
        3) Build and run the app
        4) Before doing anything else, click the "Show touch keyboard" button in the notification tray such that the touch keyboard appears.
        5) See that the…

        6 votes
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          1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
        • BUG: Setting PreferredLaunchWindowingMode before PreferredLaunchViewSize is set results in undefined behavior

          BUG: Setting PreferredLaunchWindowingMode before PreferredLaunchViewSize is set results in undefined behavior

          Repro project:
          https://github.com/riverar/fuzzy-chainsaw

          Documentation:
          https://docs.microsoft.com/en-us/uwp/api/windows.ui.viewmanagement.applicationview#Windows_UI_ViewManagement_ApplicationView_PreferredLaunchViewSize

          Credits:
          David Golden (@GoldenTao), Rafael Rivera (@WithinRafael)

          11 votes
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            1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
          • ContentDialog and x:Bind issues

            When you invoke the primary or secondary buttons in a ContentDialog, you are not losing focus in the control that was last being edited. If you are using x:Bind to bind that control's value to a property in the ContentDialog code-behind page, then when you press the primary button the property doesn't get updated.
            I've tried forcing the control (in this case a TextBox) to lose focus programmatically in the Primary buttonevent handler, but this does not help. Ive also tried Bindings.Update - bit this does not help either.

            The expected behaviour is that when you click on the Primary…

            1 vote
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              1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
            • 125% DPI crash on Slider control

              it is similar like this issue : http://www.dcfever.com/cameras/specification.php?id=1620

              We've inherit a control from Slider and put it in horizontal. If Windows set to 125% DPI and when slider value is the same as its maximum value. Our App would crash.

              1 vote
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                1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
              • ContentDialog templating issue

                When declaring a custom Template for ContentDialog, the template root must contain a Border with x:Name="Container" otherwise the ShowAsync method will throw a System.AccessViolationException.

                It MUST be done this way:
                <ControlTemplate TargetType="ContentDialog">
                <Border x:Name="Container">
                </Border>
                </ControlTemplate>

                1 vote
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                  0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                • Cannot hide a PivotItem within a Pivot

                  In some data binding scenarios it's needed to hide pivot items (Visibility=Collapsed) when they are not needed at the moment. However, collapsing a pivot item does not remove it from the UI visual tree. The header still 'exists' and is keyboard focus-able. Since you can correctly hide ListBoxItems I'm considering this a bug. Please fix it to support hiding PivotItems correctly especially during data binding when you can't simply add/remove it from the Items collection.

                  1 vote
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                    1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                  • Fix RichEditBox ProtectedText doing nothing

                    Setting ProtextedText to On doesn't work, the selected text is still modifiable.

                    Example:
                    Editor.Document.Selection.CharacterFormat.ProtectedText = FormatEffect.On;

                    Editor is the value of x:Name given to RichEditBox element.

                    1 vote
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                      0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                    • BUG: PreferredLaunchViewSize behavior differs between launches, is undocumented

                      BUG: PreferredLaunchViewSize must be 500x320 or higher at first launch (assuming 100% scale size). Subsequent launches can be user-defined as long as size is >= SetPreferredMinSize.

                      Repro project:
                      https://github.com/riverar/fuzzy-chainsaw

                      Documentation:
                      https://docs.microsoft.com/en-us/uwp/api/windows.ui.viewmanagement.applicationview#Windows_UI_ViewManagement_ApplicationView_PreferredLaunchViewSize

                      Credits:
                      David Golden (@GoldenTao), Rafael Rivera (@WithinRafael)

                      6 votes
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                        0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                      • XamlCompiler failes with Xaml Internal Error error WMC9999: Object reference not set to an instance of an object.

                        1 Create new UWP App in VS 15.5 (Target 16299, Min 16299)

                        2 In MainPage.xaml.cs add
                        public int Test { get; set; }

                        3 In MainPage.xaml add into the root Grid element
                        <GridView>
                        <GridView.ItemsPanel>
                        <ItemsPanelTemplate>
                        <Grid ColumnSpacing="{x:Bind Test}"></Grid>
                        </ItemsPanelTemplate>
                        </GridView.ItemsPanel>
                        </GridView>

                        (Notice that Intellisense suggests "Test" for the bind path)

                        4 Compile
                        C:\Program Files (x86)\Windows Kits\10\bin\10.0.16299.0\XamlCompiler\Microsoft.Windows.UI.Xaml.Common.targets(353,5): Xaml Internal Error error WMC9999: Object reference not set to an instance of an object.

                        The same with old stlye Binding works fine

                        1 vote
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                          0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                        • Master-Detail with x:Bind is not working properly: Changes are lost when selecting new item in master

                          Master-Detail with x:Bind is not working properly. When you use x:Bind to bind a TextBox to a property of the SelectedItem of a ListView, this problem exists:
                          1. you change the value in the TextBox
                          2. you select a new item in the listView
                          3. Your changes from 1 are lost, because the selection in the ListView changes before the LostFocus-event of the TextBox was raised. That means the change was never written back to the original item.

                          This bug, more description and the code to reproduce it can be found in this blogpost:
                          https://www.thomasclaudiushuber.com/2016/07/16/uwp-the-master-detail-problem-with-the-events-selectionchanged-lostfocus-and-how-to-fix-it/

                          5 votes
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                            1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                          • .net native 2.0 linker problem

                            I upgraded to the latest VS 2017 and change my UWP app to use .Net.Native 2.0. It now gets a number of linker problems that are being caused by Microsoft components. An example is:

                            --------

                            warning MCG0007: Unresolved P/Invoke method 'kernel32.dll!SetFileCompletionNotificationModes' for method 'System.Boolean Interop.Kernel32.SetFileCompletionNotificationModes(System.Runtime.InteropServices.SafeHandle, Interop.Kernel32.FileCompletionNotificationModes)'. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications…

                            2 votes
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                              0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                            • Inconsistent behavior of MediaPlayer StepForwardOneFrame and StepBackOneFrame methods

                              Repeatedly calling MediaPlayer.StepForwardOneFrame() `MediaPlayer.StepBackOneFrame() should switch between two frames, but video is moving slightly back.

                              Repository on github: https://github.com/tesar-tech/MediaPlayerFrameMoveInconsistentBehavior

                              1 vote
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                                fine feedback. :)  ·  1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                              • Canvas Unhandled Native Exception

                                I have a UWP UserControl line chart that renders a PathFigure to a Canvas. This chart supports zooming and the PathFigure size is changed during zoom but clipped within the visible Chart area. At high zoom levels (above 300%) the entire UWP app will crash with a native exception: "An unhandled win32 exception occured in <app> [17800]"

                                From my viewpoint, I think there is no way in managed code I should be getting a native exception like this. There must be a bug some place in the framework.

                                This crash only happens using the Fall Creators Update after the clipping…

                                1 vote
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                                  0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                • Binding isn't updated upon visiblity changes

                                  If a control is hidden in the UI (inside a parent control with Visibility=Collapsed) bindings will not be set. At first this isn't an issue since the control isn't Visible. However, if you make the parent visible, binding will not be triggered and you must manually force an update to get bound values to appear.

                                  This was probably done as a performance optimization; however, binding needs to recognize visibility changes if it won't bind when an item is not visible in the UI. Otherwise, yet again, MVVM is broken.

                                  1 vote
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                                    0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                  • 15.4.3 / designer crash

                                    I reported that since studio 15.4.3 the designer crash due to attached properties

                                    <Style TargetType="controls:MapItem">
                                    <Setter Property="Canvas.Left" Value="{Binding X, Mode=OneWay}"/>
                                    <Setter Property="Canvas.Top" Value="{Binding Y, Mode=OneWay}"/>

                                    Changing to last UWP solve the designer problem; but the attached properties are not working (the binding) and I have to do set binding by code

                                    see : https://developercommunity.visualstudio.com/content/problem/147336/1543-xaml-designer-crash.html?childToView=149773#comment-149773

                                    1 vote
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                                      1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                    • ucrtbase bug: _wspawnve is broken

                                      There is a serious bug in CRT (ucrtbase) which is part of Windows 10.
                                      The long story (please read it, since it contains all information about this bug): https://youtrack.jetbrains.com/issue/PY-17069#comment=27-1803709

                                      The short story:
                                      _wspawnve is broken when launched from Explorer (not cmd) because ``cenvarg.cpp`` expects undocumented environment variable ``=C`` (covered here: https://blogs.msdn.microsoft.com/oldnewthing/20100506-00/?p=14133) and this variable is not provided by Explorer.

                                      Tool to reproduce.

                                      ```
                                      #include<process.h>
                                      // Works from cmd.exe, but not from Explorer on Win10 :)
                                      void main() {
                                      const wchar_t* const args[] = {L"c:\\windows\\system32\\cmd.exe", L"/?", NULL};
                                      const wchar_t* const envs[] = { L"FOO=BAR", NULL};
                                      int r;

                                      _wspawnve(P_WAIT, L"c:\\windows\\system32\\cmd.exe", args,…

                                      25 votes
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                                        8 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                      • Clipboard content should persist even if it contains a delayed format

                                        I've noticed that when you create a DataPackage containing both data provided directly (let's say text, using SetData) and delayed formats like a bitmap (using SetDataProvider), when closing the application the whole clipboard content is cleared.
                                        I expect that the content set directly (the text) to persist after closing the application.

                                        13 votes
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                                          1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Multiple issues with NeighboringFilesQuery and file system indexer

                                          There are several issues with the file activation NeighboringFilesQuery argument and the file system indexer.

                                          1. If files are loaded using the NeighboringFilesQuery then GetPropertiesAsync on those files will only return properties that have been indexed. This prevents reading things like altitude from the GPS location data.

                                          2. The above is made a lot worse on computers where indexing file content is disabled (right click on the drive in Explorer, select properties and see check box at the bottom), which used to be recommended for SSD drives. In particular no ImageProperties are available in this case. It also happens if…

                                          1 vote
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                                            0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
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