Hi Steve,
Just rename your .p12 extension into .pfx and you are done. There is no
difference between a .PFX and .P12. Both are PKCS #12 files (Personal
Information Exchange Syntax). Both file extensions (.pfx and .p12) refer to
files that contain PCKS #12 content.
Microsoft does not support the generation of certificates in form of
..spc/.pvk any longer on modern operating systems. You can convert a .pfx to
..spc/.pvk and use it with SignCode.exe, but it is not recommended. Just use
the new .pfx with SignTool.exe.
The default code-signing option is SHA-1, but your new certificate is ready
for SHA-2 (SetupBuilder 8.5 already supports it).
Does this help?
Friedrich