Last week I tried to download Mavericks but my wife decided to turn off the comp when it was 4GB done... After that I just couldn't download it... I thought maybe the servers are too overloaded... So last night I decided to download it finally... But, still no luck... My internet is strong and working well... It click through the free download and install app buttons... It starts downloading and then everythign freezes up... a minute later it says "OSX Mavericks failed to download"... Under the purchases tab it says 'an error occured" in red next to the download button... Also, the download button is blank and unresponsive... Have searched on the apple forums but none of those steps are helpful... Most of them say it is not apple's problem but an ISP problem... Which I am sure it isn't... Please help... p.s.: I checked 2 pages of this section but, did not find a similar thread... Sorry if this has been posted before... Edit: This solved my problem... "If that didn't help, try using another user account. If you don't have one, create one in System Preferences -> Users. Log in with the new account, open App Store, etc. You can remove the new account after the installation."