Adobe Acrobat zeigt diese Fehlermeldung an, nachdem ein S/MIME Zertifikat zur digitalen Signatur in Acrobat verwendet wurde. Adobe und Sectigo bieten hierfür ein eigenes Produkt für Dokumentensignatur an, Zitat des Sectigo Supports:
Hello,
Greetings from Sectigo Support!
Yes, the Personal Authentication Certificate which you've purchased will give a trusted identity error when you sign Adobe PDF files. Instead, it is recommended to purchase a new certificate specifically designed for document signing which comes with a new trusted chain " Sectigo RSA Document Signing CA” added into Adobe Approved Trust List (AATL).
Please do refer the following link for more details about Sectigo document signing certificate.
https://sectigo.com/ssl-certificates/document-signing-certificates
Please let us know if you need any further support.
Regards,
Sectigo - Technical Support
Lösung: bitte erwerben Sie ein Sectigo Document Signing Zertifikat (InterSSL vertreibt dieses Produkt aktuell nicht).