Hi, I'm not good in french but I assume you are accessing some property of buttonConnect from another thread. Have a look at Control.Invoke to resolve this. Robert

it means that the Server is a windows Form that I would like te remote it means what are the method that I should use to do this. thank you a lot hello

Never heard of it. The web site you posted goes to a parked page with a crappy search engine behind it. The real site for Genuine Channel is http://www.genuinechannels.com/[^], complete with Dicussion boards, Support, and a Knowledge Base. Dave Kreskowiak Microsoft MVP - Visual Basic