Epson PowerLite Cinema 500 Product Support Bulletin page 13

[Caution]
In case the check box
for Don't allow
exceptions
is checked (this box is
not checked at the
initial setting), a
network port for
software is not
unblocked even though
the software is checked
on Exceptions.
Make sure this option is
not selected.
Windows Firewall screen
Page 6 of 14
PSB.2004.10.002