Can't delete files from a MyBook World

WD Legacy Products Other Network Drives
1

hi
I have windows 7 64bit.
I bought WESTERN DIGITAL My Book World Edition II 2TB with ethernet drive.
it was working well for 3 years but now it is not working

but I can explore all files ok but can’t delete any folder\files on My Book World drive.

error permission denied

can anybody knows what problem is?

2

Are you log in on the drive as the administrator?