When you try to copy a file larger than 2 GB over a Remote Desktop Services or a Terminal Services session through Clipboard redirection (copy and paste) by using RDP client 6.0 or a later version, the file isn’t copied. And you don’t receive an error message.
It’s a known issue. Copying files larger than 2 GB by using this method isn’t supported.
To resolve this issue, use one of the following methods:
Source: Copying files larger than 2 GB over a Remote Desktop Services or Terminal Services session by using Clipboard Redirection (copy and paste) fails silently