unknown user name or bad password when I tried to connect to another server

Hi guys, I need to read the file of another server via vb.net application. For this case I tried to read destination file by FileSream. The destination file in the another server is (\\dstServer\sheardFolder\dstFilename). for destination parent path I type \\dstServer\sharedFolder\Filename and this string is included in the FileSream Class. When I run this application I get the error of asp.net with this subject (Login failure: unknown user name or bad password)...!!! I set the following permissions on the parent folder at the destination Server 1- users have a full permission 2- everyone have a full permission 3- asp.net have a full permission Note: I searched in the internet and noticed that in the first step I should connect to the destination Server and my users should be authenticated by the destination Server. After that I used .Net security classes and advapi32.dll , Kernel32.dll also impersonateValidUser. I set the destination Server username an ...