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by Carolyn Samit,May 19, 2012 3:58 AM in response to chineseflagship
Carolyn Samit
May 19, 2012 3:58 AM
in response to chineseflagship
Level 10 (122,900 points)
Apple MusicHi ..
Try here > Mac App Store: "An unknown error occurred (100)" when purchasing
Try turning off the Firewall in System Preferences > Security
And if you have anti virus software installed, disable that.