DUNS ERROR 777
777 - The
connection attempt failed because the modem (or other connecting device) on the
remote computer is out of order.
This error cannot occur with Windows 95/98 or NT - only with
Windows Me or 2K.
This error can occur if you have installed your modem with an
incorrect driver. Identify your modem chipset, PCI
ID, manufacturer, and make sure you are using
the correct driver.
If you get this error, the modem or DUNS may not be installed
or set-up properly. See if you can talk to your modem with Hyperterminal setup
as described here - if you can,
inspect/re-install DUNs; if you cannot, the modem needs to be re-installed. In some cases, a simple cold-boot (shut down - power off - re-start) may solve the problem.
This error may also occur if the number you are dialing is blacklisted.
Many PCI modems include an entry in Windows' ADD/REMOVE
PROGRAMS (from Control Panel or System): it is important to remove any installed
modems using this remove function to properly update the registry. In some cases
where the modem has been installed more than once with different driver versions
without proper removal, the registry may be corrupted: if this is the case, only
manual editing, restore from backup, or re-installation of Windows may cure the
Also note: In many cases, PCI modems will not operate in all
of your PCI slots - see this page.
Also see: Forum56
Post regarding HP-supplied modem and error 777.
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