安装 MSIX 应用包的早期版本Install earlier versions of an MSIX app package

如果之前没有删除应用程序,可以在设备上执行早期版本的 MSIX 应用程序包。Installation of earlier versions of an MSIX app package can be performed on a device without prior removal of the application. 如果触发同一应用程序早期版本的安装操作,这将导致客户端检查安装 MSIX 应用程序包中包含的应用清单文件。Triggering an installation of an earlier version of the same application will cause the client to review the app's manifest file contained within the installing MSIX app package. 检查 appxmanifest.xml 文件将查明当前已安装应用与设备上正在执行的安装程序之间的增量差异。The review of the appxmanifest.xml file will identify delta differences between the currently installed app and the installer being executed on the device. 此过程会维护 appdata 文件夹中存储的数据。This process maintains the data stored within the appdata folder. 如果安装了早期版本的 MSIX 应用程序包,则在安装升级后版本时所做的任何更改都不会撤消。Any changes that were made when installing the upgraded version will not be undone if an earlier version of the MSIX app package is installed.