Q: How do I access my itunes store? A message popped up "We could not complete your iTunes Store request. An unknown error occurred (-3212)."

Hello smmdam82412,

Thanks for the question, and welcome to Apple Support Communities. The following article outlines specific iTunes Store Conditions and Alert Messages:

iTunes: Advanced iTunes Store troubleshooting

http://support.apple.com/kb/TS3297

"Error 3000" through "3999"

 

Alerts with codes in the 3000 range generally mean that iTunes cannot contact the gs.apple.com server on ports 80 or 443. This may be because out-of-date or incorrectly configured security or firewall software is interfering, or due to your Internet proxy settings. If you are using a proxy, try removing the proxy settings, or using a known-good network. If that does not resolve the issue, follow iTunes for Windows: Troubleshooting security software issues.

I realize you described your error as -3212, however there may be a chance it is related to -3221:

"Error -3221"

 

This alert is often related to iTunes and iTunesHelper being blocked by software firewall.

 

If this happens, change the permission level for iTunes and iTunesHelper in your software firewall to allow full access.

 

This should allow iTunes and iTunesHelper to both send and receive data from the iTunes Store.

Thanks,

Matt M.