If you have problems with a secure connection to iTunes on PC
Users who are able to browse the iTunes Store but are unable to sign in or purchase content may see the following message:
“iTunes could not connect to the iTunes Store. A secure network connection could not be established. Make sure SSL 3.0 or TLS 1.0 is enabled in the Internet Options control panel, then try again.”
Or, this message may appear:
“We could not complete your iTunes Store Request. The iTunes Store is temporarily unavailable. Please try again later.”
To resolve it, check your computer’s date, time and time zone. If they aren’t correct, reset them.
Set the correct date, time and time zone
On your PC, go to Start, then choose Windows System > Control Panel.
Click Clock and Region, then click Date and Time.
Click Change Date & Time.
Make sure that the date and time settings are configured to use the current date and time, then click OK.
If resetting the date and time doesn’t resolve the problem
On your PC, open Internet Explorer.
In the Tools menu, click Internet Options.
Below the Security section, look for Use SSL 3.0 and Use TLS 1.0. Make sure at least one of those options is selected, then click OK (you can select both).