I have shared folders on a computer (say computer x) on a local network. I sign in on another computer (say computer y) with an administrator account on computer y which is the owner of those shared folders and has full permissions over them. When I try to change those folders' permissions a dialog box appears with the title "Network Password". I have tried any combinations of users and passwords I know but I cannot get passed this dialog box and consequently am unable to alter permissions. How can I solve this problem? I appreciate any help.
thank you in advance