Originally I had PSCS6 installed. When I moved to the cloud and installed PSCC, both CS6 and CC would show up in the "open with" command in Explorer. I left CS6 installed "just in case." Recently, when an update for CS6 would not install (repeated failures), I had to delete it, then reinstall a very old version from disk, then update it from within the app. After that, PSCC no longer showed up in the "open with" dialog. It also did not show up in the default program manager as others here have described, so no way to manage it there. Unfortunately, when looking into RegEdit, the HKEY described by middleagedhack didn't appear *at all* ... therefore no way to edit it there. I was, however, able to find and edit the key described by Curt Y and now PSCC shows up in the "open with" dialog. It doesn't bother me that PSCS6 no longer shows up because it would be rare that I'd use the program, but this all seems a bit convoluted. My odds are on the Adobe installers as the culprit, but maybe knowing the sequence of installation events might help Adobe figure out where it all started. Thanks for the solution help everybody!
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