Access to a network denied

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.NET

Using the piece of code below, got denied to a network drive even though the network folders/files are accessible through my Windows Explorer.

using (System.IO.StreamReader sr = new System.IO.StreamReader(System.IO.File.OpenRead(@"\\netDrive\floder\SRID.txt")))  {
     s = sr.ReadToEnd();
     Console.WriteLine(s);
}

How can this problem be solved? Thanks.