Hey Mmiikkeedd,
Thanks for the question. I understand you are experiencing issues updating iTunes. The following article may help to resolve your issue:
iTunes: About the "A secure network connection could not be established" alert
http://support.apple.com/kb/TS1470
"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."
If you continue to have issues, you might want to try the steps outlined in this article:
Trouble installing iTunes or QuickTime for Windows
http://support.apple.com/kb/HT1926
Thanks,
Matt M.