I have a windows 2008 R2 server and I now installed a new bigger HDD into it. I wanted to copy big AVI files to the new server hdd what is shared on the local network. I have write access to the servers hdd and I can successfully copy smaller files to it. But when I copy bigger files more than 500MB randomly on the copy I get Access Deny message. If I use RDP I can copy files through RDP client. I checked error messages at the server but I didn't found any error about this access deny. Because of RDP copy works I don't think that this could be hardware error. I think this is some kind of software setting error. Someone has faced this kind of error? Or somebody has idea what could cause or how to find the root of the problem?