Je dois modifier un PDF que j'ai créé, mais je n'arrive pas à l'ouvrir. Un message qu'une ID numérique a été utilisée pour chiffrer, mais qu'uncune ID n'est présente pour le déchiffrer ...

Most likely the situation is as the message describes it: The document has been encrypted using the public key of the X.509 certificate referenced and described underneath. Thus, Acrobat needs the corresponding private key to decrypt the document.

Did you upgrade your version of Acrobat lately?

Can I ask a favor of you?

Rather than provide a screen capture that we cannot translate, could you please copy the text from your screen and paste it into the post? That way we can all translate your Acrobat report into other languages and help us help you through your issue.

Randy