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Thank you NFern,

I have Quickbooks Desktop Pro 2015 and have recently upgraded computers to Windows 10 Pro from Windows 7 Pro. I have always used Chrome as my default browser. I started receiving the script error immediately upon reinstalling Quickbooks after upgrade.

NFern's suggestion works:

In QuickBooks on the menu bar click HELP>Internet Connection Setup>Next>Advanced Connection Setting>Security (tab)>Restricted Sites>Sites. In the "Add this website to the zone:" paste or type just this part of the url address the error message is complaining about, such as cdn.optimizely.com, as an example. Click Add>Close>OK>Done.

You may see a quick flash but you will not get the Script Error Question.