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Mountain lion error 100

When i try to download mountain lion i get an error 100. When i try to donwload a free app it works. Othwerwise i get the error. I have tried signing out the mac app store log out log in, restarting computer, almost everything.

MacBook Pro (13-inch Late 2011), Mac OS X (10.7.4)

Posted on Jul 25, 2012 6:06 AM

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Posted on Jul 25, 2012 6:08 AM

Its probably just the application being bombarded with so many users trying to dowload it, just give it a while and it will hopefully all settle down 🙂

7 replies

Jul 25, 2012 10:44 AM in response to coolrush

If you still need help...


Try here > Mac App Store: "An unknown error occurred (100)" when purchasing


If that doesn't help, open the Finder. From the Finder menu bar click Go > Go to Folder


Type this exactly as you see it here;


~/Library/Caches/com.apple.appstore/Cache.db


Click Go


Move the Cache.db file to the Trash.


Now here:


~/Library/Preferences/


Click Go


Move these files from the Preferences folder to the Trash.


com.apple.appstore.plist


com.apple.storeagent.pllist


Now here:


~/Library/Cookies


Click Go


Move the com.apple.appstore.plist file from the Cookies folder to the Trash.


Empty the Trash, try the App Store.

Mountain lion error 100

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