If you forgot the password of your Linksys router, you can reset your router to go back to factory settings of your Linksys router. To perform factory settings, you can follow the below mentioned steps:
To reset your Linksys router, you need to press the reset button for 30 seconds.
Once you press the router’s reset button, unplug and re-plug the router’s power adapter.
To restore the default settings of your Linksys router.
Log in to the admin page using linksyssmartwifi.com or 192.168.1.1.
Once you get access to the login authentication page, enter default credentials.