The following code example demonstrates how to determine whether any update packages are mandatory. Typically, you should downgrade your app experience gracefully for the user if a mandatory package update does not successfully download or install. For example, if you have an app with content that is installed via optional packages, you might want to provide a UI that enables users to uninstall the optional packages to free up disk space.
This example assumes:. These methods are useful if your app or game supports large optional packages including DLCs that can take hours or days to download and install, and you want to gracefully handle the case where a customer closes your app or game before the download and installation process is complete. When the customer starts your app or game again, your code can use these methods to get info about the state of the packages that are still in the download and installation queue so you can display the status of each package to the customer.
The following code example demonstrates how to call GetAssociatedStoreQueueItemsAsync to get the list of in-progress package updates for the current app and retrieve status info for each package.
Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? Please rate your experience Yes No. Any additional feedback? Note These methods support required and optional packages for your app.
One transform updates the information in the installation database of the application. The other transform adds information that the installer uses for patching files. The installer uses the information provided by the transforms to apply patch files that are stored in the cabinet file stream of the patch package. A patch package does not have a database like an installation package. Beginning with Windows Installer version 3. Users can install applications and updates from a network administrative image.
Although patch packages can be applied to administrative installations, the recommended method to deliver updates is to have users install the original application and then apply the patches to the local instance of the application on to their computer. This keeps users in synchronization with the administrative image. If a patch is applied to the administrative installation, all clients of that administrative installation must recache and reinstall the application to receive the update.
Until a user recaches and reinstalls, the user is unable to install-on-demand and repair installations from the patched administrative installation. Beginning with Windows Installer 3.
Another method is to use least privileged user account patching. If the AllowLockdownPatch policy has been set, non-administrator users can apply a patch to an existing application while running an installation at elevated privileges.
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