Clear cache,saved password of remote machines in windows

Open a command prompt do this command:

net use

you get the list of saved connections AND of open sessions

c:\>net use
New connections will be remembered.
Status       Local     Remote                    Network
-------------------------------------------------------------------------------
Unavailable  J:        \\server\storedname       Microsoft Windows Network
Disconnected           \\server\IPC$             Microsoft Windows Network
The command completed successfully.

The "\server\IPC$" name is the session of which the password is remembered! Now with the command

net use \\server\IPC$ /delete

you will delete the cached password without the need of a logout!