I recently encountered some problems trying to sync my iPhone to my PC. I reinstalled my iTune and cannot resolve this problem.
The message read as ' This iPhone cannot be used because the required software is not installed. Run the iTunes installer to remove iTunes, then install the 64-bit version of iTunes." I am already installing the 64 bits version (iTune Ver 10.6.1). Appreciate advise to resolve this.
Try uninstalling iTunes and all of its components as by following this guide: Windows XP or Windows Vista/7, then reinstall the latest version of 64-bit iTunes. You must follow this guide exactly or it will not be successful. Note: uninstalling iTunes will only remove the application; it will not touch your iTunes library or data.