Windows App Certification Kit tests

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The Windows App Certification Kit contains a number of tests that help ensure your app is ready to be published to the Microsoft Store. The tests are listed below with their criteria, details, and suggested actions in the case of failure. We expect apps to be fully functional without the use of Windows compatibility modes, AppHelp messages, or compatibility fixes.

ActivateApplication to launch apps. For ActivateApplication to launch an app, App fur binare handler optionen demonstration Account Control UAC must be enabled and the screen resolution must be at least x or x If either condition is not met, your app will fail this test. If your app fails to launch and your test platform satisfies the prerequisites of ActivateApplicationyou can troubleshoot the problem by reviewing the activation event log. To find these entries in the event log:. Troubleshoot the file with the problem, identify and fix the problem.

Rebuild and re-test the app. You can also check if a dump file was generated in the Windows App Certification Kit log folder that can be used to debug your app. Checks that the Windows app can run on a future version of the OS. This test has historically been only applied to the Desktop app workflow, but this is now enabled for the Store and Universal Windows Platform UWP workflows. Operating system version info has restricted usage for the Microsoft Store.

This has often been incorrectly used by apps to check OS version so that the app can provide users with functionality that is specific to an OS version. If the app crashes, it will fail this test. Apps should use Version API helper functions to check this. See Operating System Version for more information. This verifies that the app has a cancellation handler for declared background tasks.

There needs to be a dedicated function that will be called when the task is cancelled. This test is applied only for deployed apps. Store apps can register a process app fur binare handler optionen demonstration runs in the background. For example, an email app may ping a server from time to time. However, if the OS needs these resources, it will cancel the background task, and apps should gracefully handle this cancellation.

Apps that don't have a cancellation handler may crash or not close when the user tries to close the app. The app is launched, suspended and the non-background portion of the app is terminated. Then the background tasks associated with this app are cancelled. The state of the app is checked, and if the app is still running then it will fail this test.

Add the cancellation handler to your app. For more information see Support your app with background tasks. This verifies that an app package APPX, app bundle contains one application. This was changed in the kit to be a standalone test. For Windows Phone 8. For Windows 10 apps the test verifies that the revision number in the version of the bundle is set to 0. Examines the app manifest to verify the contents are correct as described in the App package requirements. Your app can declare the file extensions that it wants to associate with.

Used improperly, an app can declare a large number of file extensions, most of which it may not even use, resulting in a bad user experience. This test will add a check to limit the number of file extensions that an app can associate with. This test enforces the requirement that apps take appropriate dependencies on the UWP. If there is an inappropriate dependency, this test will fail. If there is a mismatch between the OS version the app applies to and the framework dependencies made, the test will fail.

The test would also fail if the app refers to any preview versions of the framework dlls. This test enforces the requirement that UWP apps do not communicate outside of the app container to Desktop components.

Inter-process communication is intended for side-loaded apps only. Review the app's manifest against the requirements described in the App package requirements.

Tests the app's security by running the BinScope Binary Analyzer. The BinScope Binary Analyzer tests examine the app's binary files to check for coding and building practices that make the app less vulnerable to attack or to being used as an attack vector. The BinScope Binary Analyzer tests check for the correct use of the following security-related app fur binare handler optionen demonstration. When you apply the APTCA attribute to an assembly, partially trusted callers can access that assembly for the life of the assembly, which can compromise security.

Don't use the APTCA attribute on strong named assemblies unless your project requires it and the risks are well understood. In cases where it's required, make sure that all APIs are protected with appropriate code access security demands.

An app fur binare handler optionen demonstration handler runs when the app encounters an exceptional condition, such as a divide-by-zero error. Because the address of the exception handler is stored on the stack when a function is called, it could be vulnerable to a buffer overflow attacker if some malicious software were to overwrite the stack.

This option is on by default in the Release configurations of Visual Studio. Verify this option is enabled in the build instructions for all executable modules in your app. The test is not performed on bit binaries or ARM chipset binaries because they don't store exception handler addresses on the stack. Address Space Layout Randomization ASLR loads executable images into unpredictable locations in memory, which makes it harder for malicious software that expects a program to be loaded at a certain virtual address to app fur binare handler optionen demonstration predictably.

Your app and app fur binare handler optionen demonstration components that your app uses must support ASLR. Verify that all modules that your app uses also use this linker option. Normally, ASLR doesn't affect performance. But in some scenarios there is a slight performance improvement on bit systems. It is possible that performance could degrade in a highly congested system that have many images loaded in many different memory locations.

Binary files with writable sections that are marked as shared are a security threat. Don't build apps with shared writable sections app fur binare handler optionen demonstration necessary. Remove any shared sections from app fur binare handler optionen demonstration app and create shared memory objects by calling CreateFileMapping or MapViewOfFile with the proper security attributes and then rebuild your app.

The AppContainerCheck verifies that the appcontainer bit in the portable executable PE header of an executable binary is set. Apps must have the appcontainer bit set on all.

If a managed executable fails the test, make sure that you used the latest compiler and linker, such as Microsoft Visual Studio, to build the UWP app.

Windows App Certification Kit error message: A portable executable PE image fails this test if its import app fur binare handler optionen demonstration has been placed in an executable code section. This can occur if you enabled. Don't merge the import table into an executable code section. The check helps to ensure that a binary does not have any pages that are mapped as writable and executable. Disabling Edit and Continue will cause the invalid section to not be present.

Private app fur binare handler optionen demonstration signing files should be kept private as they may be used for malicious purposes in the event they are compromised.

Tests for files within the app package that have an extension of. This test also identifies situations where a managed binary takes a dependency on a function outside of the approved profile. The app must respond quickly to user interaction and system commands in order to present a fast and fluid user experience. The characteristics of the computer on which the test is performed can app fur binare handler optionen demonstration the test results.

As a performance optimization to accelerate JavaScript execution time, JavaScript files ending in the. This significantly improves startup and ongoing execution times for JavaScript operations.

When using bindings, WinJS. The badge logo is an image that appears next to the badge notification to identify the app on the lock screen. App fur binare handler optionen demonstration image must be monochromatic it can contain only white and transparent pixels. The pixel must be 2A2A2A or darker, or transparent Because the badge logo appears on a white background when in high-contrast white, it must be a dark version of the normal badge logo.

In high-contrast white, the badge logo can only contain pixels that are darker than 2A2A2A or transparent. The image must app fur binare handler optionen demonstration at least one variant without a TargetSize qualifier.

It must define a Scale qualifier or leave Scale and TargetSize unspecified, which defaults to Scale If you have localizable content in your app manifest, make sure that your app's package includes a valid resources. You can get this error if the manifest changed and the name of the resource map in resources.

To fix this, you need to rebuild resources. The default value of AutoMerge is off. When enabled, AutoMerge merges an app's language pack resources into a single resources. We don't recommend this for apps that you intend to distribute through the Microsoft Store. Refer to the App package requirements. The schema for the elements in the app manifest don't allow leading or trailing white space characters.

Make sure that none of the localized values of the manifest fields in resources. For more info, see App package requirements.

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This tutorial is using Visual Studio Community If you are using a different version of Visual Studio, it may look a little different for you. If you don't see any Universal templates, you might be missing the components for creating UWP apps. See Get set up. If this is the first time you have used Visual Studio, you might see a Settings dialog asking you to enable Developer mode. Developer mode is a special setting that enables certain features, such as permission to run apps directly, rather than only from the Store.

For more information, please read Enable your device for development. To continue with this guide, select Developer mode , click Yes , and close the dialog.

The default settings are fine for this tutorial, so select OK to create the project. When your new project opens, its files are displayed in the Solution Explorer pane on the right. You may need to choose the Solution Explorer tab instead of the Properties tab to see your files.

Although the Blank App Universal Window is a minimal template, it still contains a lot of files. These files are essential to all UWP apps using C. Every project that you create in Visual Studio contains them.

To view and edit a file in your project, double-click the file in the Solution Explorer. Expand a XAML file just like a folder to see its associated code file. It can be entered manually, or created using the Visual Studio design tools.

Together, the XAML and code-behind make a complete class. For more information, see XAML overview. Let's add a button to our page. In this tutorial, you work with just a few of the files listed previously: You'll notice there is a graphical view on the top part of the screen, and the XAML code view underneath. You can make changes to either, but for now we'll use the graphical view.

Click on the vertical Toolbox tab on the left to open the list of UI controls. You can click the pin icon in its title bar to keep it visible. At this point, you've created a very simple app. This is a good time to build, deploy, and launch your app and see what it looks like.

You can debug your app on the local machine, in a simulator or emulator, or on a remote device. Here's the target device menu in Visual Studio. By default, the app runs on the local machine. The target device menu provides several options for debugging your app on devices from the desktop device family. The app opens in a window, and a default splash screen appears first. The splash screen is defined by an image SplashScreen.

Press the Windows key to open the Start menu, then show all apps. Notice that deploying the app locally adds its tile to the Start menu. To run the app again later not in debugging mode , tap or click its tile in the Start menu. Click the Stop Debugging button in the toolbar. An "event handler" sounds complicated, but it's just another name for the code that is called when an event happens such as the user clicking on your button.

Double-click on the button control on the design canvas to make Visual Studio create an event handler for your button. You can of course, create all the code manually too. Or you can click on the button to select it, and look in the Properties pane on the lower right. If you switch to Events the little lightning bolt you can add the name of your event handler.

Make sure you include the async keyword as well, or you'll get an error when you try to run the app. This code uses some Windows APIs to create a speech synthesis object, and then gives it some text to say. For more information on using SpeechSynthesis, see the SpeechSynthesis namespace docs.

When you run the app and click on the button, your computer or phone will literally say "Hello, World! To learn how to use XAML for laying out the controls your app will use, try the grid tutorial , or jump straight to next steps? Our new feedback system is built on GitHub Issues. For more information on this change, please read our blog post. Here you'll learn how to: Run the project on the local desktop in Visual Studio.

Use a SpeechSynthesizer to make the app talk when you press a button. What's a Universal Windows app? Download Visual Studio and Windows If you need a hand, learn how to get set up.

We also assume you're using the default window layout in Visual Studio. If you change the default layout, you can reset it in the Window menu by using the Reset Window Layout command.

Note This tutorial is using Visual Studio Community Note If this is the first time you have used Visual Studio, you might see a Settings dialog asking you to enable Developer mode. What type of feedback would you like to provide? Give product feedback Sign in to give documentation feedback Give documentation feedback Our new feedback system is built on GitHub Issues.