Question : Problem: I can't copy shared files .... WHY???

When i try to copy a shared file from a computer (Through WORKGROUP) it gives me the following error mesg.

both PCs are useing Windows XP Pro. ....

What the reason for that ... i need to make a backup for that PC ... but i couldn't !!

Answer : Problem: I can't copy shared files .... WHY???

ENSURE A BACKUP IS DONE BEFORE TRYING THE FOLLOWING:

Can you give the file name? Can the file be 'BACKED UP on the local machine? If so, canyou back it up and then from the remote machine, see if you are able to delete it. If you can't, see if you can delete it on the local machine. It may be locked by another applicaiton. Have you tried rebooting and then retrying the operation right after the reboot.