DUNS Errors

DUNS ERROR 6xx

600 :- An operation is pending. 601 :- The port handle is invalid. 603 :- Caller's buffer is too small. 606 :- The port is not connected. 607 :- The event is invalid. 610 :- The buffer is invalid. 613 :- Invalid compression specified. 614 :- Out of buffers. 616 :- An asynchronous request is pending. 618 :- The port is not open. 626 :- Cannot load a string. 632 :- The structure size is incorrect. 637 :- The string could not be converted. 638 :- The request has timed out.

[ DUNS ERRORS 600, 601, 603, 606, 607, 610, 613, 614, 616, 618, 626, 632, 637, 638:

An internal error (Windows operating system) has occurred. Microsoft advises to shut-down and re-start computer to make sure that all recent configuration changes have taken effect.

If this does not correct the problem, you may need to remove and re-install portions of Windows, or re-install Windows. ]

DUNS ERROR 602

602 - The port is already open.

If the port is already open, another application has control over the modem.

This can sometimes occur with errant applications (poorly written software) not closing the port, or terminating abnormally. If this is the case, it may be necessary to re-boot the computer before the modem will be recognized.

You can get a list of applications that are running (and might have the port opened) by pressing CTRL+ALT+DEL and selecting the TASK LIST or TASK MANAGER (NT). This will display the actual program names - it may be difficult to pinpoint which, if any, programs are accessing the modem. Terminating tasks are about the only way - however, if you terminate certain tasks, your system may crash or become unstable. With Windows 95/98 ending the rnaapp task may solve the problem See this page.

Port Already Open / Modem Won't Hang Up

If you get a PORT ALREADY OPEN error when trying to establish a dial-up connection, that's Window's way of telling you some other device is using the modem.

If some other device is actually using the modem (such as a voice/fax program or you are already on a dial-up connection), the solution is to terminate the other task, or to disable auto-answer features in its software.

Sometimes, Windows gets confused, and it may seem like a reboot is the only answer. With Windows 95/98 in most cases, you can re-gain access to the port by terminating the rnaapp Task:

Press CONTROL, ALT & DELETE - this will bring up the Windows Task Bar Close Program box (Windows98SE shown at right)

Look for the Rnaapp task, select it, and then click End Task.

The procedure above may also be used as a last resort if you have difficulty getting your modem to hang up or disconnect a dial-up call.

The problem can also be caused by [prior] installation of AOL. See DUNS Error 602.

MODEM WON'T HANG UP:

• How do you disconnect? Depending upon the software (especially 3rd-party), the procedure used to disconnect a call may vary. When using Microsoft Windows DUNs, an icon will appear in your System Tray (normally part of the Start Bar at the bottom right of the screen) which will give you disconnect option when clicked. (right click, left click, double-click). Check to make sure you are using the correct procedure to disconnect your call.

• Modem could be damaged. If your phone line is taken off-hook by the modem anytime it is powered on (the PC is on if internal), it is 'beyond repair'. Symptoms would include only being able to make the call if you plug the phone cord into the modem when you're ready to dial, or your line going 'dead' as long as the modem is plugged in. This can happen after a thunderstorm, and can also occur if your modem uses a newer all-electronic switch (proving to be somewhat less reliable than old electro-mechanical relay). Seek warranty replacement if applicable. Also see: Lightning Strikes.

If a program is being run automatically (check your start-up group) that accesses the modem and leaves the port open - you need to either change the configuration of that program, or remove it from the STARTUP group.

Sometimes, uninstalling, then re-installing the modem (CONTROL PANEL-> Modems / Remove) may help.

If AOL was or is installed on the computer, deleting all AOL adapters, and MS Windows dial-up adapters (networking), then re-boot and re-install the MS dial-up adapter may solve the problem.

With Windows 2000 or XP if you have Quicken 2000 installed: The error can be caused by the Quicken Download Manager; Removing the modem and re-installing it may result in the modem working - for a single session. The permanent solution is to remove Quicken 2000, or disable the Quicken Download Manager. This Intuit article explains how to turn off the Quicken Download Manager. The problem is also discussed in this Dell Solutions KB Article. Also see this Delltalk message.

Also see:
Sometimes, re-installing telephone.ini may help - see DUNS Error 633.

Microsoft KB Article Q158114 - Win 95/98