Some simulated input commands were not sent successfully

When I enter the barcode number (any first number) in order page, I receive the message below:

Some simulated input commands were not sent successfully. The most common reason for this happening are the security features of Windows including User Interface Privacy Isolation (UIPI). Your application can only send commands to applications of the same or lower elevation. Similarly certain commands are restricted to Accessibility/UIAutomation applications. Refer to the project home page and the code samples for more information.

Any idea what is this?

This doesn’t sound like anything to do with SambaPOS. Have you got some other software installed that is related to your keyboard, barcode scanner, etc?

Or have you installed Windows Input Simulator which is what comes up when I search Google with your error message.

I have same problem after update. The problem shows at my POS terminal by windows 7 x86. This is a noname POS terminal with touch screen.

[General Info]

Application: SambaPOS
Version: 5.2.18
Region: ru-RU
DB: SQ
Machine: BS-002
User: pos
Date: 20.01.2019
Time: 10:29

User Explanation:

pos said “”

[Exception Info 1]

Top-level Exception
Type: System.Exception
Message: Some simulated input commands were not sent successfully. The most common reason for this happening are the security features of Windows including User Interface Privacy Isolation (UIPI). Your application can only send commands to applications of the same or lower elevation. Similarly certain commands are restricted to Accessibility/UIAutomation applications. Refer to the project home page and the code samples for more information.
Source: WindowsInput
Stack Trace: at WindowsInput.WindowsInputMessageDispatcher.DispatchInput(INPUT[] inputs)
at WindowsInput.KeyboardSimulator.TextEntry(String text)
at Samba.Presentation.Controls.VirtualKeyboard.CustomKeyboardViewModel.ProcessText(String text)
at Samba.Presentation.Controls.VirtualKeyboard.CustomKeyboardViewModel.ProcessVirtualKey(VKey key)
at Samba.Presentation.Controls.VirtualKeyboard.CustomKeyboardViewModel.OnKeyPress(CustomKey customKey)
at Microsoft.Practices.Prism.Commands.DelegateCommand`1.<>c__DisplayClass6.<.ctor>b__2(Object o)
at Microsoft.Practices.Prism.Commands.DelegateCommandBase.Execute(Object parameter)
at Microsoft.Practices.Prism.Commands.DelegateCommandBase.System.Windows.Input.ICommand.Execute(Object parameter)
at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)
at System.Windows.Controls.Primitives.ButtonBase.OnClick()
at System.Windows.Controls.Button.OnClick()
at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)


[Assembly Info]

mscorlib, Version=4.0.0.0
Samba.Services, Version=1.0.0.0
Samba.Domain, Version=1.0.0.0
Samba.Infrastructure.Data, Version=1.0.0.0
System.ComponentModel.Composition, Version=4.0.0.0
Samba.Presentation.Services, Version=1.0.0.0
System.Core, Version=4.0.0.0
PresentationCore, Version=4.0.0.0
WindowsBase, Version=4.0.0.0
DevExpress.Xpf.LayoutControl.v16.2, Version=16.2.13.0
System.Xml, Version=4.0.0.0
DevExpress.Xpf.Grid.v16.2, Version=16.2.13.0
System, Version=4.0.0.0
DevExpress.Xpf.Grid.v16.2.Core, Version=16.2.13.0
System.Xaml, Version=4.0.0.0
PresentationFramework, Version=4.0.0.0
Samba.Infrastructure, Version=1.0.0.0
Microsoft.Practices.Prism, Version=4.0.0.0
System.Runtime.Serialization, Version=4.0.0.0
Microsoft.Practices.Prism.MefExtensions, Version=4.0.0.0
DevExpress.Xpf.Core.v16.2, Version=16.2.13.0
System.Windows.Forms, Version=4.0.0.0
System.Drawing, Version=4.0.0.0
Samba.Persistance, Version=1.0.0.0
Stateless, Version=1.0.0.0
PropertyTools, Version=2012.4.14.1
Samba.Localization, Version=1.0.0.0
ReachFramework, Version=4.0.0.0
EntityFramework, Version=6.0.0.0
FluentValidation, Version=3.4.0.0
NCalc, Version=1.3.8.0
Microsoft.CSharp, Version=4.0.0.0
Omu.ValueInjecter, Version=2.3.0.0
Microsoft.Practices.ServiceLocation, Version=1.0.0.0
DevExpress.Data.v16.2, Version=16.2.13.0
WindowsInput, Version=1.0.4.0


[System Info]

Operating System
-Microsoft Windows 7 Ultimate
–CodeSet = 1252
–CSDVersion = Service Pack 1
–CurrentTimeZone = 240
–FreePhysicalMemory = 986616
–OSArchitecture = 32-bit
–OSLanguage = 1033
–ServicePackMajorVersion = 1
–ServicePackMinorVersion = 0
–Version = 6.1.7601

Machine
-BS-002
–Manufacturer = To be filled by O.E.M.
–Model = To be filled by O.E.M.
–TotalPhysicalMemory = 2033180672
–UserName = BS-002\pos


And when I use keyboard on SambaPOS on Windows 10 x64 machine - I don’t have this problem. What wrong? I tried to uninstall touchscreen drivers, and disable windows virtual keyboard … Without results…

I don’t understand, what’s worked, but I fixed it.
So, maybe one of this steps works:

  1. Full UAC disable;
  2. Uninstall “Total 360 Security” software;
  3. Disable windows defender and install “Comodo Internet security”
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