The first beta of Microsoft Office 2007, referred to as Beta-1 in emails sent to a limited number of testers, was released on November 16, 2005. The Beta-1 Technical Refresh was released to testers on March 13, 2006. The Technical Refresh fixed issues in installing with Windows Vista build 5308. Office 2007 Beta 2 was announced by Bill Gates at WinHEC 2006, and was initially released to the public at no cost from Microsoft's web site. However, because of an unprecedented number of downloads, a fee of $1.50 was introduced for each product downloaded after August 2, 2006. The beta was updated on September 14, 2006 in Beta 2 Technical Refresh (Beta2TR). It included an updated user interface, better accessibility support, improvements in the robustness of the platform, and greater functionality. The beta versions continued to function in a reduced functionality mode after February 1, 2007. If users downloaded the Technical Refresh to update Beta 2, then users could use its full functionality until March 31, 2007 for client products and May 15, 2007 for server products. The Beta program ended on November 8, 2006, when Microsoft declared the product "Released to Manufacturing" (RTM) and started manufacturing the final product. After RTM, the availability of the beta download ended. Office 2007 was released to volume licensing customers on November 30, 2006, and to the general public on January 30, 2007.