The underlying connection was closed: An unexpected error occurred on a receive
问题 When I try my program on my win2k8 machine it runs fine but on win 2k3 it gives me this error that error message here's the code that' generating the error WebClient wc = new WebClient(); wc.DownloadFile("ftp://ftp.website.com/sample.zip"); there's the weird part. if i disable the firewall on the server completely. the error goes away. but it still errors if i add the program to the exception list and turn on the firewall. have search the web for days, couldn't find any solution. 回答1: You