COM1 Access

[Guest]

I have a piece of commercial software that communicates
with a laboratory instrument via COM1. When I, as a
domain admin log onto the pc, the software runs fine.
However, when a lab technician logs on to the same pc (no
admin privs), the application will not launch. When I
make the lab tech a member of the administrators group on
the pc, the app runs fine again. I am fairly certain that
this is due to a restriction on the serial ports.

Does anyone have a registry hack that will allow an
ordinary user to access these serial ports?

Thanks.

 

[Pavel A.]

Most probably it fails on registry access to restricted areas,
something like searching for existing COM ports in HKLM\HARDWARE\DESCRIPTION.
To test that COM port itself is not restricted, run Hyperterminal.

- PA