ZyXEL Communications HW-D Series User Manual

P-662H/HW-D Series User’s Guide

Chapter 27 Troubleshooting

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In order to use the web configurator you need to allow:

• Web browser pop-up windows from your device.
• JavaScripts (enabled by default).
• Java permissions (enabled by default).

Note: Internet Explorer 6 screens are used here. Screens for other Internet Explorer 

versions may vary.

You may have to disable pop-up blocking to log into your device. 

Either disable pop-up blocking (enabled by default in Windows XP SP (Service Pack) 2) or 
allow pop-up blocking and create an exception for your device’s IP address.

1 In Internet Explorer, select Tools, Pop-up Blocker and then select Turn Off Pop-up 

Blocker. 

Table 146   Troubleshooting Accessing the ZyXEL Device

I cannot 

access the 

ZyXEL Device.

The default user password is “user” and admin password is “1234”.  The Password 

field is case-sensitive. Make sure that you enter the correct password using the proper 

case.
If you have changed the password and have now forgotten it, you will need to upload 

the default configuration file. This restores all of the factory defaults including the 

password.

I cannot 

access the 

web 

configurator.

Make sure that there is not a Telnet session running.
Use the ZyXEL Device’s WAN IP address when configuring from the WAN. Refer to 

the instructions on checking your WAN connection.
Use the ZyXEL Device’s LAN IP address when configuring from the LAN. Refer to for 

instructions on checking your LAN connection.
Check that you have enabled web service access. If you have configured a secured 

client IP address, your computer’s IP address must match it. Refer to the chapter on 

remote management for details. 
Your computer’s and the ZyXEL Device’s IP addresses must be on the same subnet 

for LAN access.
If you changed the ZyXEL Device’s LAN IP address, then enter the new one as the 

URL.
See the following section to check that pop-up windows, JavaScripts and Java 

permissions are allowed.