Mar 08, 2016

How to fix error on a Mac?

When trying to upload pics to iCloud Photo Library, I got a pop-up error message - “This operation couldn’t be completed: error 4.” What’s the problem and how do I fix this?
Looks like the error is due to some problem with iTunes store, try the following: "Some folks on the wide Internet have seen this same error 4, and after much troubleshooting, found the way to clear this state is to log into an iTunes Store account in the OS X version of iTunes, check credit-card information, and update it if it threw an error. In some cases, people only had to log out of their iTunes Store account in iTunes, and then log back in to clear the condition."
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