Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item.
Anyone will get this message sooner or later so the normal steps I usually do are:
Check if I have read/execute permissions on the file
Check if it is blocked because it is an internet download and then unblock it
Check if I'm the owner
Well today I did this on a file that I downloaden on server A, copied to a storage server and then copying it to server B to run it again. I got this message and did the steps above without any success.
The almighty google helped me again but not in the first few hits on the error. It guided me to a forum where the solution was posted to the message Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item.
"Un-install IE Enhanced security from Windows Components. Viola problem gone"
I tried it and I can now execute those files although it should have worked as all security attributes on the file where set correctly. Very weird...