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Old 08. Feb 2013, 05:09 PM   #1 (permalink)
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Default Install and Uninstall Windows Store apps

Installing and uninstalling Windows apps are as quick as you do with the Android and iOS apps, and much easier and quicker than you did with most legacy Windows software.

Here're some useful resources from App packages and deployment (Windows Store apps), with the key points underlined here:

App Package: You acquire your app from the Windows Store as an app package (.appx).

Install and Uninstall: Windows uses info in an app package to install the app on a per-user basis, and ensure that all traces of the app are gone from the device after all users who installed the app uninstall it.

App isolation: App isolation on the operating system is only limited to the user portion of the Windows Store app. All other data from the app is stored in a location that the operating system can access. For example, suppose UserA installed the Calculator app and UserB also installed the Calculator app; in this scenario, only one copy of the Calculator app binaries are stored on the drive (%ProgramFiles%\WindowsApps), and both users have access. UserA doesn't see UserB’s app data and vice versa. While the runtime binaries are shared, the app data is still isolated.

Package de-registration and de-staging:

The de-registration process is where the Windows Store app’s integration into the user’s account is removed. Any associated data that was installed to the user’s account, such as app state, is also removed.

After the de-registration operation successfully completes, the package, if it is not being used by any other user on the operating system, is marked for removal from the operating system. Initially, Windows copies the package's app package folder into the %ProgramFiles%\WindowsApps\Deleted directory. When no other deployment operations are ongoing, Windows deletes the package's app package folder. In multi-user scenarios, the app package might still be installed on the operating system for another user. In this case, the package content isn't de-staged from the operating system until all users have removed it.


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Old 08. Feb 2013, 07:30 PM   #2 (permalink)
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Jojo, if you are not planning to put it somewhere else, how about writing this up for a Tech Tip ?
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