File.Copy From remote server gives error == The specified network name is no longer available.

Posted on 2005-03-23
Medium Priority
Last Modified: 2008-03-10
So, I have log files on a server with an ip of "xxx.xx.xxx.xxx" (lets call it Server X)

I have a script on different server at ip "yyy.yy.yyy.yy" which uses the c# .net  File.Copy to get a local copy of the files on the server X.  Basically, I get the dir on Server X, and say

DirectoryInfo dir = new DirectoryInfo(directoryOnServerX);
FileInfo[] filesInDir = dir.GetFiles();
foreach(FileInfo file in filesInDir){
File.Copy(ServerXDir + file.Name , ServerYDir + file.Name);

If Im moving 1 or 2 files, it always works, but if I move 3 or more files the file.copy method starts to choke. it spits out errors of:

          System.IO.IOException: The specified network name is no longer available.      
          at System.IO.__Error.WinIOError(Int32 errorCode, String str)    
          at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite)
          at System.IO.File.Copy(String sourceFileName, String destFileName, Boolean overwrite)    
          at DealixCore.IO.Copy(String FileFrom, String FileTo, Boolean overwrite)

I think that because Server X and Server Y are different servers on different parts of the internet and there is some lag and my loop moves through my list of files faster then the remote server X (script runs on server Y) can refresh its file system info...???
My question is: How can I get around this?

Question by:dealix
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LVL 14

Accepted Solution

Thandava Vallepalli earned 2000 total points
ID: 13619134
try this


go to Start menu -> All programs -> Administrative tools -> Local Security  
(Opens Local Security settings window)  
In the left pane, navigate to security settings -> Local Policies ->  
security Options  
in the right pane find and make sure that the following settings are  
Microsoft Network Client: Digitally sign communications(always)  
Microsoft Network Client: Digitally sign communications (if server  
Microsoft Network Server: Digitally sign communications(always)  
Microsoft Network Server: Digitally sign communications (if client  
do this on all pc's and reboot.  
It seems that the cause of this problem is a bug in Microsofts SMB driver  
signing, and what this solution does is disabling it. (might not be a good  
idea if you are on a domain).  
Microsoft has a hotfix for this, but the only thing that it did for me was  
removing the MrxSmb warnings in my event log?! problem remained though.  
I hope that this works for you, otherwise, good hunting


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