Do you have the same problem like I have had with updating iCloud? The Apple Software Updater only offered me to download the setup file separately and install it manually but with no difference. I have always received the error ” the specified account already exists” and the installation aborted. Interestingly, this is not an iCloud specific problem but can happen to any Windows program but the problem is caused by registry error. Help and a method to fix this error, I found in The OpenOffice Forum. The problem is, iCloud cannot even be uninstalled due to the same error. However the solution is simple, use IOBit Uninstaller, it allows you to fully uninstall iCloud and remove all the remaining parts of iCloud afterwards, so that you can reinstall iCloud without running into this error ever again! 🙂