Itunes was unable to load provider data from sync services

I tried to sync my iphone with itunes and this came up, how do i fix it? If it helps i have a windows 7.

Ok, here it goes.iTunes just got a new update, mine did that quite often before I updated it and doesn't now (But I do have a Mac). Also, my friends have talked about theirs saying that, and it just being the cord or software on computer not being up to date. Hope this helps!