When I try to install my software in some computers, I used to get a message “Verified publisher: Unknown”.
I understand from some documentation that the installer must be signed.
Question 1:
Can I sign the installer using self-signed certificate ?
The self signed certficate displays ” This certificate cannot be verified up to a trusted certification authority”
Please advice.
No, self-signed certificate won’t work, as you have discovered. You need to purchase a “code signing certificate” (quoted for it’s a term for you to search for) and sign-and-timestamp your EXE (most likely both setup and application files).