Step 1: Open your web browser and enter http://dlinkrouter or http://dlinkrouter.local or http://192.168.0.1 into the address bar.
Step 2: The default username is Admin and the password is blank (nothing). Click Login.
Step 3: Click on the Setup tab at the top then click Wireless Settings on the left side
Step 4: Click on Add Wireless Device With WPS
Step 5: Choose Manual and then click Next
Your wireless network information should now be visible, including your wireless password (Pre-shared Key).
Step 1: Click on the Setup tab at the top and click Wireless Settings on the left side
Step 2: Click on Manual Wireless Network Setup
Step 3: Scroll down the page to "Wireless Security Mode".
This is the section where you set the wireless password (Pre-Shared Key). You can input a new password; be sure to click Save Settings at the top of the page once complete.
If you’ve registered your router with mydlink, you may log in to the mydlink web portal at www.mydlink.com to modify your router’s settings.
Step 1: Go to https://www.mydlink.com
Step 2: Log in to mydlink with your existing mydlink account and password.
Step 3: Choose the router from My Devices. Go to Settings.
Step 4: Go to Basic Settings to modify your password. You may also click “Show password” in order to display the password on your screen.
Step 5: Select Apply if you have made changes to Settings.
Step 6: Select Yes if you would like to apply the new settings to the router. It will take at least 80 seconds to save the changes and reboot the router.