Universal Windows Platform

Welcome to the Universal Windows Platform Developer Feedback site. This site provides the Windows developer community with a channel for feedback on the following topics:

  • Windows developer platform (APIs, runtimes, and controls)
  • Dev Center (dashboard, reporting/analytics, submission process, etc.)
  • Microsoft Store

Your suggestions will be reviewed by the Windows platform developer team to help with planning ideas and to better understand how developers are using the platform.

What this forum is not intended to cover or capture:

  • Windows consumer suggestions: Use the Windows Feedback Hub app built directly into Windows 10
  • Documentation on docs.microsoft.com: Sign in at the bottom of the page to give documentation feedback via Github
  • Visual Studio / .NET: Use the Visual Studio UserVoice site

If you’re new to UserVoice, two things to keep in mind are (a) List items (and item rankings) represent community interest in features, and not the actual priority list for the product team; and (b) Suggestions made using this forum will be moderated if they do not actually represent a feature request (or if too many different ideas are included in one suggestion).

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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…

    208 votes
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      20 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.

    • ALT KeyUp not generated even if handledEventsToo is specified

      We are supposed to get KeyUp events even if the event is handled if we hook up the callback using

      UIElement.AddHandler( UIElement.KeyUpEvent, new KeyEventHandler(…), true)

      However, this does not work correctly for the ALT key. If you press the ALT key and release it immediately then you do get the KeyUp; however if you press and hold the ALT key, then release it, you do not get the KeyUp. You do get KeyDowns.

      I am guessing this relates somehow to the AccessKey system -- ?

      I am using Microsoft.NETCore.UniversalWindowsPlatform 6.1.7 on Windows 10.0 build 17134.

      4 votes
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        1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
      • Webview crash with too long URIs

        Web view crash with too long URIs
        When redirecting from a webpage to a non supported URI that is longer than 2084 characters the Webview will crash without the throwing any exception.
        The weird part about this is that if you redirect the webview to a URI starting with http:// or https:// or you send it to a malformed URI (someting:aLotOfText) of the same length it will be able to handle it.

        Example repository:
        https://github.com/jeroen1602/UWPWebviewCrash

        1 vote
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          1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
        • DatePicker date bug when system timezone changes

          There seems to be a bug in the DatePicker control that appears when the system TimeZone changes.

          This can be easily reproduced, start by creating a UWP app that has the DatePicker control, and a TextBlock below it, bind them both to a DateTimeOffset object that will contain the value of DateTime.Now.

          Reproduction steps:
          1) Start the app, controls show DateTime.Now
          2) Use TZUTIL in CMD to change Timezone to something that makes the date change (For instance, from UTC-12 to UTC+14)
          3) Update controls with DateTime.Now

          Expected: DatePicker shows DateTime.Now.
          Actual: DatePicker shows old day, when opened shows correct…

          5 votes
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            2 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
          • Setting Width based on ActualWidth introduces render bug

            When I set the width of a Grid inside a ListView.ItemTemplate to the ActualWidth of the Parent ListView, the first element won't render content. If I remove it, the first line renders correctly. If I remove/re-add that line or add a name/remove a name property, some redraw happens and the first line becomes visible. I tried to work around it to force an UpdateLayout on the elements, but to no avail.

            I packaged the app, tested it on a clean laptop in dev modus and it occurs there as well.

            I can provide the sample app that i created in…

            1 vote
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              1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
            • Compilation of {x:Bind} to a global / static ViewModel fails when using Mode OneWay or TwoWay

              Compilation fails with error CS1061 in MainPage.g.cs: "MainPage.MainPage_obj1_Bindings" does not contain a definition for "bindingsTracking" and no extension method "bindingsTracking" accepting a first argument of type "MainPage.MainPage_obj1_Bindings" could be found.

              This is the same error that was marked Completed here:

              https://wpdev.uservoice.com/forums/110705-universal-windows-platform/suggestions/19316077-compilation-of-x-bind-to-static-fields-fails-if

              5 votes
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                3 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
              • [UWP] Files created with DownloadsFolder.CreateFileAsync cannot be loaded with StorageFile.GetFileFromPathAsync

                Files created with DownloadsFolder.CreateFileAsync cannot be loaded by the full path name with StorageFile.GetFileFromPathAsync. This doesn't really make sense as the documentation states, "All apps can create files and folders in the Downloads folder and can access the files that they create". Attempting to do this results in the following error:

                Exception thrown: 'System.UnauthorizedAccessException' in System.Private.CoreLib.dll
                WinRT information: Cannot access the specified file or folder (C:\Users\{Username}\Downloads\{PackageName}_y356m3t891zm4!App\{FileName}.pdf). The item is not in a location that the application has access to (including application data folders, folders that are accessible via capabilities, and persisted items in the StorageApplicationPermissions lists). Verify that the file…

                3 votes
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                  1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                • [UWP] ScrollViewer layout cycle bug

                  There is quite a bad bug in the UWP ScrollViewer control that causes a layout cycle exception to be thrown. It occurs under these conditions.
                  1. The ScrollViewer contains a panel like a Grid with VerticalAlignment set to stretch (the default).
                  2. The ScrollViewer height changes when the window resizes (or for some other reason).
                  3. The ScrollViewer height is less than the height of the content of the panel, and the vertical scrollbar is showing (e.g. hover over it with the mouse).
                  4. The window is resized with the scrollbar still showing so that the ScrollViewer height is greater…

                  1 vote
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                    1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                  • message center icon keep showing 99 new messages

                    message center icon keep showing 99 new messages even i see the messages

                    2 votes
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                      0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                    • preserve product name

                      today when i want preserve new product name (game ) =>
                      Create this product in a sandbox
                      i got this alert :
                      Unexpected error, we couldn't complete your request. Please try again later.

                      Correlation ID: ae4d1680-798c-4b18-be5b-54051b71d071

                      plz fix it

                      2 votes
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                        0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                      • UWP DatagramSocket does not receive data until after data is sent on the socket.

                        See: https://stackoverflow.com/a/39767527 and https://stackoverflow.com/a/39768462

                        You can also use https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/DatagramSocket to demonstrate this issue. Use scenario 5 to listen for multicast traffic and observe nothing is received until after hitting the send button.

                        1 vote
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                          0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                        • BUG: Custom attached dependency property w/CreateDefaultValueCallback

                          Created a custom attached property for Page elements.
                          Added PropertyMetadata via PropertyMetadata.Create so I could specify a CreateDefaultValueCallback handler.

                          When using the custom attached property, my CreateDefaultValueCallback handler gets called over and over again, it doesn't appear to ever set the value of the attached property. I can have two lines of code, one right after the other that are both calling Get(PropertyName) on the same object/property, and each time my default value callback is executed.

                          I would expect that the default value callback only gets called once, then sets the value for that object/property.

                          1 vote
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                            0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                          • Webview crash with too long URIs

                            Web view crash with too long URIs
                            When redirecting from a webpage to a non supported URI that is longer than 2084 characters the Webview will crash without the throwing any exception.
                            The weird part about this is that if you redirect the webview to a URI starting with http:// or https:// or you send it to a malformed URI (someting:aLotOfText) of the same length it will be able to handle it.

                            Example repository:
                            https://github.com/jeroen1602/UWPWebviewCrash

                            1 vote
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                              0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                            • RadioButton navigation bug when using TabFocusNavigation=Once and XYFocusKeyboardNavigation=Enabled

                              Arrow keys do not move between radio buttons if the containing StackPanel has TabFocusNavigation="Once". If the containing StackPanel has TabFocusNavigation="Local" (or is not set) then the arrow keys will not move back from an initial RadioButton to a preceding Button in the StackPanel.

                              Like this:

                              <StackPanel XYFocusKeyboardNavigation="Enabled" TabFocusNavigation="Once">
                              <Button Content="B1"/>
                              <Button Content="B2"/>
                              <RadioButton Content="R1" />
                              <RadioButton Content="R2" />
                              <RadioButton Content="R3" GroupName="X" />
                              <RadioButton Content="R4" GroupName="X" />
                              <RadioButton Content="R5" />
                              <Button Content="B3"/>
                              </StackPanel>

                              While this example includes Button as well as RadioButton, the problem is evident even if you only have RadioButton.

                              With TabFocusNavigation="Once", navigation gets stuck at R1. Starting with…

                              1 vote
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                                1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                              • Bug in KeQueryMaximumProcessorCountEx

                                There is a bug when calling KeQueryMaximumProcessorCountEx(0)
                                The bug reproduces in the following case:

                                The bug happens in the following situation
                                Specific OS: Windows 2008 R2 Datacenter Edition.
                                Must be running as a VM.
                                Dynamic Hardware Partitioning must be enabled (in ESX this feature is called CPU Hot-Plug).
                                The hypervisor (ESX host) must have MORE THAN 64 CPUs (and when it has between 128 and 255 CPUs, a bluescreen is guaranteed).
                                The guest (Win2008) must have AT MOST 64 vCPUs.

                                The problem seems to be, in the case of CPU hot-plugging enabled, this function confuses the fact that it needs…

                                1 vote
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                                  0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                • When you open an Image. Minimize it and right click on minimized icon and then select close window options .The Image is not getting closed.

                                  When you open an Image. Minimize it and right click on minimized icon and then select close window options .The Image is not getting closed. Is this a bug. I am facing a similar problem while with my own developed UWP

                                  1 vote
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                                    0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Bug in ColorPicker Control Programatically Changing Alpha

                                    With the ColorPicker control (thanks for adding this, btw!) there is a bug when changing alpha channel programmatically. Create a new ColorPicker with Alpha enabled in the UI and a ColorChanged event handler.
                                    (1) Set .Color to a transparent color #00000000.
                                    (2) Then, in a color changed event handler change to 0xFFxxxxxx (100% opacity). It's important to change the alpha similar to:

                                    this.ColorPicker.Color = Color.FromArgb(0xFF,
                                    this.ColorPicker.Color.R,
                                    this.ColorPicker.Color.G,
                                    this.ColorPicker.Color.B);

                                    You'll notice the preview color in the UI is correctly updated but the opacity slider and value do not change. The opacity slider should update when opacity is changed in the code-behind.

                                    1 vote
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                                      0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Filter Manager and Unified Write Filter incompatibility

                                      When the Unified Write Filter is running on a volume, where an excluded folder of exactly 5 characters is present in the root of the drive, the FltParseFileNameInformation fails miserably. It parses the information by setting ->Volume.Length to ->Name.Length + 2, which must never happen.
                                      Additionally, FltQueryFileNameInformation and FltPerformSynchronousIo cannot function on the file object, representing the particular folder.
                                      The issue does not happen on subfolders and files, but only on the 5-character folder in the root of the protected drive, which is excluded.

                                      1 vote
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                                        0 comments  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                      • WEBVTT timed texts bug in media element

                                        If first cues start/end time is in "mm:ss" format, and continues with format "h:mm:ss" - they will not be parsed and not showed in TimedMetadataTrack.Cues list.

                                        For example:

                                        59:53.230 --> 59:56.480
                                        It works.

                                        59:57.280 --> 1:00:00.990
                                        But it is not parsed

                                        1:00:01.740 --> 1:00:04.080
                                        Also not parsed

                                        Example vtt file link:
                                        https://smotret-anime.ru/translations/vtt/1781022

                                        1 vote
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                                          1 comment  ·  Bugs  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Toggleswitch when tabbed to (on) crashes with Access Violation Exception

                                          OS: Windows 10 Pro 1803 build 17134.191
                                          Target Platform (min): Windows 10 1803

                                          When pressing tab to jump between controls, app crashes when it reaches a Toggleswitch control.

                                          Have to use "IsTabStop=False" as a workaround, but not a good solution as the toggleswitches are not usable for keyboard users.

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