I have a problem with copying from a network drive to the root of the C drive or to "program files(x64)" or to directly under "\Users" directly from the network. Here's the error I'm getting:
"X:\ is unavailable. If the location is on this PC, make sure the device or drive is connected or the disc is inserted, and then try again. If the location is on a network, make sure you're connected to the network or Internet, and then try again. If the location still can't be found, it might have been moved or deleted."
I can however copy the network file to a temporary location (such as desktop), another folder I created directly under C drive etc. It is also not a network connectivity issue.
This happens on fully patched Win 8.1 machines on a windows domain network with a domain admin account (and also with a local admin account). Shares are also Windows 2012 Servers, not a third party NAS etc.
Another important thing is, it's fine if you are copying from any local resource to the root of C or to other problematic locations. So this is not a basic permission issue I assume.
Looking to see what is causing this and whether I can change this behavior. You can see the effective permissions on one of the problematic folders below. As you can see I should have full access to this folder.