Open up an MSDOS command window. Type :
net fileThe id, path, user name, loc# for the file will show up in a text list. Once you find the file you want unlock, you'll need to remember the id. To unlock the file, go back to the MSDOS command window. Type:
net file 99/close (
where 99 = file id)
On a windows server there are 2 other ways:
1. From an MSDOS command window type:
Openfiles.exe /query /s YOUR_SERVER_NAME2. Server Manager>Roles>File Services> Share and Storage Management (right click on SaSM) >Manage Open File