How to Reset the Dlink DGL-3420

On this page I will be showing you how to reset the Dlink DGL-3420 router back to the original factory defaults. It's important that you know the difference between resetting and rebooting a router. When you reboot a unit you cycle the power to the device. This is done manually by unplugging the power source, waiting about 30 seconds, then plugging it back in. When you reset a router you take all the settings on your device and return every one of them back to factory defaults.

Warning: Resetting this router erases every single setting you have ever changed on your device. We recommend making a list of the settings you know about. Consider the following:

Other Dlink DGL-3420 Guides

Reset the Dlink DGL-3420

The first step in any reset is to locate the physical reset button. This button has been found for you. Take a look at the image below.

Take an unfolded paperclip and press down on the reset button for about 10 seconds. This begins the reset process. If you don't hold this button down for long enough you end up only rebooting the router instead of resetting it like you wanted.

Remember this is going to erase every single setting you have ever changed. We recommend trying other troubleshooting methods before a reset is done.

Login to the Dlink DGL-3420

After you've reset the Dlink DGL-3420 router you'll need to log into it. This is done by using the default username and password. Don't know where to find these? We have them listed for you in our Login Guide.

Tip: If the defaults aren't working for you it could be because the reset button wasn't held down for long enough.

Change Your Password

Now that you've logged in we suggest setting a new password. Keep in mind that a strong password consists of 14-20 characters and includes no personal information. For more help visit our Choosing a Strong Password Guide.

Tip: To avoid losing your new password try writing it on a sticky note and attaching it to the underside of your router.

Setup WiFi on the Dlink DGL-3420

Now let's take a look at the wireless settings. You need to change the SSID, the Internet password, and the security method. We recommend using the security type of WPA2 with a strong password. If you need help with this we recommend taking a look at our guide titled How to Setup WiFi on the Dlink DGL-3420.

Dlink DGL-3420 Help

Be sure to check out our other Dlink DGL-3420 info that you might be interested in.

Rachel Bauer

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Rachel Bauer is an owner and primary author for She is available on Google+ and you can find more of her articles in the Networking section of our site.