Hello Stefan, the developer of GPG4Win advised devs of mail clients to use GPGME as a lib to use de-/encryption/signing/verification of OpenPGP content/mails. Had you considered to do this?
-- Regards Gwen Using The Bat! Version 10.1.0.2 (32-bit) on Windows 11 10.0 (Build 22000 )
pgpAbRFOY6JHs.pgp
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