Connect to your WiFi network
Open a web browser
Enter your router’s IP address in the address bar
Log in with the router admin username and password
Go to Wireless, WiFi, or WLAN settings
Select the WiFi network you want to change
Find the WiFi password, WPA key, or security key field
Enter the new WiFi password
Save or apply the changes
Restart the router if required
Reconnect your devices using the new WiFi password