App package block map
The package block map file is an XML document that contains a list of the app’s files along with indexes and cryptographic hashes for each block of data that is stored in the package.
Visual Studio and the MakeAppx packaging utility automatically create and insert a package block map (AppxBlockMap.xml) when they build each app ZIP package.
Use the block map file to:
- Understand the structure and content of a block map file that is required for tools that you want to create to produce app packages
- Check and re-validate the app content after the app deploys
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