The most recent versions of Adobe Reader install a new security feature. When in place, any attempt to open a PDF file within Safari is initially blocked. In order to get the PDF to open, you have to negotiate two warning messages.
Call me reckless, but I am not especially concerned about the security risk here. I would much rather avoid the hassle of having to deal with the warnings each and every time I attempt to load a PDF. So, I set about to disable the feature. Figuring out how to do so turned out to be more work than I had anticipated.
When you attempt to open a PDF in Safari with Adobe Reader security enabled, the “blocked” message appears. After clicking the arrow button, you next have to click Trust in the dialog box that drops down. At last, the PDF will load.
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