Manage Sessions and Open Files

To view and close open sessions

    In the Actions pane, click Manage Sessions.

    To close a specific session, select the session and click Close Selected.

    -Or-

    To close all sessions, click Close All. 

To view and close open files

    In the Actions pane, click Manage Open Files.

    To close a specific file, select the file and click Close Selected.

    -Or-

    To close all files, click Close All.

Additional considerations
 
To open Share and Storage Management, click Start, point to Administrative Tools, and then click Share and Storage Management. 

SOURCE: MICROSOFT