Abstract: Embodiments provide an optimized virtual application or suite of virtual applications, but are not so limited. In an embodiment, components of a system are configured to generate an optimized virtual package that can be used in a virtual application streaming environment. Components of the system can provide bits of the optimized virtual package based in part on scenario mappings associated with a user action and/or an application or application feature. In one embodiment, a client virtualization handler can operate to download byte ranges of an optimized virtual package including re-prioritizing byte range download operations as part of streaming virtual application functionality over a computing network.

Abstract: Technologies are described herein for bootstrapping streamed and virtualized applications from a network. Bootstrapping features may be deployed entirely over hypertext transfer protocol (HTTP) or other file download, or file transfer, mechanisms. A bootstrap loader, or bootstrapper, may provide the user interface (UI) elements during launch of an application from a network. Prerequisites, system requirements, languages, and localization for the application may be supported. Consistent UI elements may be presented starting with the bootstrapper through to the streaming and initial execution of the application. Consistent UI elements and rapid streamed downloading can provide a user with a boot-like user experience even for an online click-to-run application being streamed from a network.

Abstract: A determination is made as to whether an updated image for an outdated virtualized application is available on a server. If it is determined that the updated image is available, then a background download operation configured to retrieve the updated image from the server is initiated. Another determination is made as to whether the outdated virtualized application is being utilized. After the background download operation is complete, if it is determined that the outdated virtualized application is not being utilized, then the outdated virtualized application is transformed to a current virtualized application by replacing at least a portion of the outdated virtualized application with the updated image. The outdated virtualized application and the current virtualized application are configured to be executed on the computer without installation on a computer.

Abstract: Technologies are described herein for generating a local copy of a virtualized application package from a local installation. An empty copy of the virtualized application package is generated from a skeleton file. The skeleton file contains a hash value computed from each data block in the virtualized application package. The component files of the application are retrieved from a virtual file system representation of the location installation of the application, and each component file is divided into one or more blocks of data. A hash value is computed for each block of data and the skeleton file is searched for a hash value corresponding to a data block of the virtualized application file that matches the hash value computed for each block of data. If a match is found, the block of data is copied to the corresponding data block of the empty copy of the virtualized application package.

Abstract: Virtual applications are automatically kept up to date with the current version of a virtual application. Instead of the client having to obtain the entire version of the current virtual application, the client obtains the portions of the current virtual application that are changed from its version of the virtual application. After obtaining the changes needed to update its version of the virtual application, the client integrates those changes into its version of the virtual application.