Unknown Error Occurred (0x80090330)

Hi everyone,

I'm receiving an error when I try to purchase anything from the iTunes stores, or I click on iTunes Match or Purchased, etc. It says 'We could not complete your iTunes Store request. An unknown error occurred (0x80090330).

These are the troubleshooting steps I've already taken. I've done the winsock (sp?) reset that I found here in the forums, I've uninstalled and reinstalled all apple software (following the steps found here), and I replaced the host file. I did run diagnostics under Help in iTunes, and undner network connectivity tests it comes back with Secure link to iTunes failed. I followed the steps under 'Help' adding exceptions to the Windows Firewall and this didn't resolve the problem either.

Honestly, my iTunes was working fine about two weeks ago, no changes to security, etc so I have no idea what has caused the problem. Any help would be appreciated.

Oh, I am able to purchase songs and apps from my iPod Touch connected to my wireless network, it's just not working on my desktop for some reason.