What is a pck file and how do I open a pck file?
PCT files are used by System Center Configuration Manager, an application used to administer large groups of Windows computer systems. The PCK contains an update package which can store system and application files, and is used for updating client systems.To distribute PCK files, the SCCM software first builds a compressed PCK file with the source files for the update and then sends it to a Distribution Point computer. The DP allows registered client computers to download available packages in order to update their software.
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How to open pck file on Wikipedia
How to open pck file on Microsoft.com