La position officielle d’Adobe, pour qui sait lire entre les lignes ça veut dire que Acrobat Pro X, XI et 2017 ne seront pas mis à jour :
Adobe Acrobat uses a certificate issued by ‘Adobe Root CA’ to sign Reader Extended PDFs. This certificate can no longer be used to create new Reader Extended PDFs post its expiry on January 7, 2023. The November 2022 update of Adobe Acrobat (Continuous and Classic track) creates Reader Extended PDFs using a new certificate issued by ‘Adobe Root CA 2’. Adobe recommends users update to the latest version of Acrobat (November 2022 update or later) to continue using this functionality post-January 7, 2023.
Please update the application to the latest version, 22.3.20281 (Mac) or 22.3.202082 (Win) and reboot the computer once. Go to Help > Check for updates.
You may also download the patch manually from the link https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/index.html