To disable or enable the built-in password manager in Firefox, follow these steps:
- Open Firefox and click on the menu button in the top-right corner (represented by three horizontal lines) and select "Options."
- In the Options menu, click on "Privacy & Security" on the left-side panel.
- Scroll down to the "Logins and Passwords" section.
- Here, you will find the option to enable or disable Firefox's built-in password manager. To enable it, make sure the checkbox next to "Ask to save logins and passwords for websites" is checked. To disable it, uncheck the box.
- Additionally, if you want to clear any saved passwords, you can click on the "Saved Logins" button, and it will open a list of all saved passwords. From there, you can remove individual passwords by selecting them and clicking on "Remove," or you can click on "Remove All" to delete all saved passwords.
Remember that if you disable Firefox's built-in password manager, it won't save or autofill passwords for websites anymore, and you might rely on an external password manager to handle your login credentials.