Make certain the file is not in use by another program (or another user on a network), and/or make certain you have the right network permissions and try again.
Kufanya baadhi ya faili si katika matumizi na mpango mwingine (au mtumiaji mwingine juu ya mtandao), na / au kufanya baadhi una ruhusa mtandao wa kulia na kujaribu tena.