MacOS has a feature called “Gatekeeper” designed to lock down your Mac, forcing it to only run Apple-approved software by default. But a Mac is locked down in the same way Android is locked down –you’re still free to run any application you want. Gatekeeper works a little differently depending on which version of macOS you’re running. The Adobe PDF Printer is not available or is unusable from Mac OS X Snow Leopard (v10.6) to Mac OS X Mountain Lion (v10.8). If you are using Acrobat 9 Pro, update to Acrobat 9.1 Pro. The Updater removes the Adobe PDF Printer from the Printer list and adds the Save As Adobe PDF command to the PDF. Some Mac users say that they can't download programs from other website except Mac App Store, or they may can't be opened the download file. When they click on the download file, it says 'xxx can't be opened because it is from an unidentified developer'.For example. Actually it's a common question, many have bypassed this iTunes not opening issue on Windows 10/8/7 or Mac computer using one of the following methods. Tip 1.Try Starting iTunes in 'Safe Mode'. Tip 2.Empty iTunes Library. Tip 3.Uninstall and Reinstall iTunes. Tip 4.Repair iTunes with TunesCare.
The Adobe PDF Printer is not available or is unusable from Mac OS X Snow Leopard (v10.6) to Mac OS X Mountain Lion (v10.8).
- If you are using Acrobat 9 Pro, update to Acrobat 9.1 Pro. The Updater removes the Adobe PDF Printer from the Printer list and adds the Save As Adobe PDF command to the PDF menu.
- In the PDF menu, choose Save As Adobe PDF, and follow the onscreen instructions.
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If you upgrade from Mac OS X Leopard (v10.5), Snow Leopard (v10.6), Lion (v10.7), or Mountain Lion (v10.8), the Adobe PDF Printer isn't removed.
The Save As Adobe PDF command appears in the PDF menu.
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Security features in Snow Leopard and later editions that disable the Adobe PDF Printer. Adobe Acrobat 9.1 Pro and later editions up to Acrobat 11.0.x Pro remove the Adobe PDF Printer. Add, they add a Save As Adobe PDF command. Customers using earlier versions of Adobe Acrobat in Snow Leopard cannot use the Adobe PDF Printer.
Technical changes in Mac OS X Snow Leopard (v10.6) and the later editions prevent Adobe from delivering a PostScript-based printer module. However, the new PDF workflow takes advantage of the PDF-based printing architecture already present in Mac OS X. By choosing Save As Adobe PDF from the PDF menu, Apple-based PDFs are converted to Adobe-quality PDFs using your JobOption settings.
The benefits of a PDF-to-PDF print workflow include the following:
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- Better performance
- Higher-quality PDFs
- The ability to create PDFs that are compliant with Standards, such as PDF/X and PDF/A
- The potential for adding functionality to PDFs, such as bookmarks, hyperlinks and watermarks
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Users of non-Adobe PostScript-based publishing applications cannot print directly to Adobe PDF, and must use another PDF creation method.
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Some versions of some Adobe products, such as InDesign and Illustrator CS4 or CS5, don't support the PDF menu in the Mac OS X print dialog box. For those cases, either save as (Illustrator) or export (InDesign) to a PDF file. Or, print to PostScript® file and open that file with Distiller, Acrobat Professional, or Apple's Preview application. For more information, see Error | Save as PDF options unsupported | Create PDF | InDesign, Illustrator | Mac OS 10.6 or later