appxsignature.p7x
368 distinct file contents recorded under this name ยท 2000 Windows records
Newest 100 shown. The JSON endpoint has all 368.
This name has more records than one lookup returns; counts here are a floor, not a total.
PKCS #7 signature file Reference
A .p7x file contains a digital signature in the PKCS #7 format. Windows app packages in the APPX and MSIX formats keep their signature as AppxSignature.p7x. The signature covers the package content through a block map of file hashes. Windows validates the signature before it installs the package. The file is binary.
A file extension is only a part of the file name. It does not give a guarantee about the format or the content of a file. But on Windows, the extension selects the program that opens the file.