Hello Jenifer,  The publisher in my project does match the Signer Information, as shown in the attached files. In my release, I have a Postbuild Event, in which language transforms are embedded within the MSI.  After embedding the MSTs, I manually sign the MSI.  I noticed that the MSIX conversion starts, it decompresses the package into a directory as "C:\TMP\AS\<#>\, and under subdirecory "a" I see the uncompressed MSI.  If I right click the MSI to see its properties, it does NOT have a digital signature.    1.  Could the Postbuild Event be causing the error during signing? 2.  During the MSIX conversion, is it expected for the uncompressed MSI to NOT have a digital signature? I appreciate your help.   Octavio M ... View more