new update for iCloud fails to install

I haven't been able to get the last 3-4 updates to install. They get almost to the end and then I get an error message "There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support or package vendor." I've tried turning off my antivirus and my firewall before running the update but the updates still won't complete the installation. I've also tried to install each manually but that doesn't work either.

iPhone 5, iPad3 iOS 8.02, PC, Win7 Home Premium, 64-bit, Norton IS

I believe they do. There are a couple of other threads reporting this same problem.

Yep, lots of us are having the exact same problem. See my post from a few minutes ago on the other thread where you also posted recently.

"........on the other thread....."

MOST helpful.............................!

WHERE?

However, more importantly, does ANYONE actually have a cure?

Obviously Apple doesn't since they are extremely SILENT on the subject.