Acrobat and macOS 10.15 Catalina compatibility - Adobe Inc.
helpx.adobe.com › acrobat › kbJun 18, 2020 · Acrobat 2015: If you download Classic 2015 Acrobat or Reader patches from the release notes or the FTP site, you see a notarization prompt and the installation is blocked. It's general behavior for all installer packages downloaded using a browser and not from the Mac App Store. To begin the installation, right-click the installer and choose Open.