Hi Audric,

There are two things when you are storing a password. If you want to change them for each website/account, you need to go to that particular website and change it from there like Facebook, Google, Twitter and more.

The second way is, you have already changed all those passwords, and want to update those passwords in your Google Chrome local machine.
As Chrome will save your login usernames and passwords for the various websites you visit. When you save them, it will automatically complete the sign-in fields for you the next time you visit the websites.

You can follow the below steps to do so:

1. Open your Chrome browser and from the top right Chrome menu button, select Settings. Alternatively, you can simply type chrome://settings in the address bar and hit Enter.
2. Scroll down and click on Show advanced settings. Now scroll down to the Passwords and forms section and click on the Manage passwords link.
3. You will a list of all your saved passwords. The passwords will be hidden by asterisk marks. To see them, click on the Show link.
4. Chrome will ask you to enter your Windows login password. This is good security measure added by Chrome.
5. Once you enter it, you will be shown the password.

When Chrome offered to save a password, if you clicked Never for this site, your password will not be saved and the site will be added to a list of passwords that are never saved. You can also remove any URLs you have saved in the Never saved list. Once you have finished, click on the Done button.

I hope this helps in changing the passwords from Chrome.

Regards,
Lokesh