Unfortunately, there is no public Support date provided by the HP when it comes to the HP TDConnect application. I see on their forums that the users still have the software in their business portfolios. There is a forum set up in the Quality Center which handles the information and requests about TDConnection. Access the forum, register for an account if you don't have one and then post the same question. The ones who work with the software will give you details about the end of support date for HP TDConnect.