When I copy a 2 GB file or more than that from 2008R2SP1 to another 2008R2 server it is failing. It used to hang .I would not' see any errors. The screen just sits there. The only way to get rid of this is to kill it from the task manager.If we copy any file from other server it was fine. So the issue is specific only between these 2 machines. I have tried with small files it works most of the time. This is what I have done so far 1. Removed and Updated AV 2. Broke Teaming 3. Tried safemode with networking 4. Upgraded mrxsmb.sys and srv.sys The only thing is left is taking a network trace.

Hello Kapil It seems that you have tried almost evrything. Try this, take a backup of the registry on the SOURCE machine. Navigate HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SessionManager\Memory Management\ Create a REG WORD VALE PoolUsageMaximum and set the value to 30 and try copy. I am sure this will work. This has worked for me on more than one ocassion.

You are the Champ...:)