Can't copy large file to pool over the network (not a space issue) in General Posted Monday at 10:53 PM Another thing I have is that if I copy files from a client to the Server of the network, it matters whether I access the Server through Explorer -> Network or through a mapped network drive. The latter sometimes fails but I am pretty sure it has to do with some sort of permission (SQL Server backup files I can not copy through the mapped network drive) and I get a different message anyway. So, completely OT. So basically, I have no clue. I hope someone else here as an idea on how to diagnose and/or fix. I would have a look at Event Viewer on both the client as the server. Not optimistic but I'd look.