Some shotcuts on remote machines are in the form "\\thiscomputername\c$\program files\myapp\myapp.exe". This was done some time ago as a quick and easy way to edit or create shortcuts on remote machines by mapping to the machine (rather than having to Remote Desktop) and, for the path, using the form \\theremotecomputername\c$\ rather than c:\ which would refer to the c: drive back here on my machine.
Following a tightening of security and permissions on the network these remote machines are now asking for a username and password to run the shortcut. I don't want to look at permissions at this stage, I just want to change \\theremotecomputername\c$\ back to c:\ without having to Remote Desktop and without the shortcut on the remote machine thinking that the program is here on my c: drive!
Hope this makes sense!