Windows 8 has a feature that allows users to manage the web credentials saved via Internet Explorer 10. This option is helpful when you have forgotten the website username or you do not want to save the user credential.
Click the Tools menu on the Internet Explorer 10 and select Internet Options from the menu list.
In the Internet Options window, navigate to Content tab and click the Settings button under Auto Complete section.
Then click the Manage Passwords button in the AutoComplete section.
This should display the Credential Manager window with the option to manage saved Web Passwords on Internet Explorer 10.
Another alternative way to access the Web Credentials option on Windows 8 is by navigating Windows 8 desktop, then selecting Control Panel from the sidebar. In the Control Panel click the Credential Manager option under User Accounts and Family Safety.
Windows 8 –> Desktop –> Control Panel –> User Accounts and Family Safety –> Credential Manager.