If IE11 or Edge asks if it can save your login id and password (assuming you have that option set) when you sign in to a site but you decide later that you don’t want them saved for that site, how do you change that? Here’s how:
Select the Tools icon (that cog icon on the far right of the toolbar) and choose Internet options. In the Content tab select Settings in the AutoComplete section.
In the AutoComplete Settings window, select Manage Passwords,
This brings up the Credentials Manager screen, with the web credentials.
Click the down arrow for the website you no longer want login information to be saved.