I am changing the HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.pdf key. I am changing the default from AcroExch.Document.DC to be the other PDF software I am using. Even after the change is made Reader is still the default program for .pdf.
I am comparing the registry of a computer where we had installed Reader XI and the 3rd party software to see what kind of behavior the registry should have when switching the default viewer. I have made the same changes that worked with XI on the computer DC but it does not work.
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