Microsoft has forced all developers to use a code signing certificate that uses the SHA-256 algorithm in order for signatures to be recognized on Windows 7+, as of Jan 1 2016. See http://aka.ms/sha1 for the full details but the consequence of Microsoft's decision means that our SHA-1 certificate that we received needed to be replaced.
Today SHA-1 certificate has been replaced by new SHA-256. kSign version has been updated as well to support that new certificate. As a test MaxBulk Mailer distribution file has been built successfully!
IMPORTANT NOTICE: Our office will be closed for holidays from June 6th, 2018 until July 10th, 2018 inclusive, our support may be limited so please expect a delayed response during that period. More information here. Thank you for your patience and understanding.