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by Carolyn Samit,Sep 28, 2012 6:01 AM in response to Michael631228
Carolyn Samit
Sep 28, 2012 6:01 AM
in response to Michael631228
Level 10 (122,225 points)
Apple MusicMac App Store: "An unknown error occurred (100)" when purchasing
If nothing there helps, temporarily disable anti virus software.
Apps such as Little Snitch, Hands Off, and Net Nanny can prevent apps from downloading as well as third party download managers.