To Disable “Show Password” Button in Windows 8, Windows 8.1 and Internet Explorer follow these steps:
- Press "WIN+R" to launch RUN dialog box
- Type gpedit.msc and press Enter to open Group Policy Editor
- Go to: Computer Configuration -> Administrative Templates -> Windows Components -> Credential User Interface
- In pane on right side, double-click on "Do not display the password reveal button" option and set its value to "Enabled"