How to Remove a Watermark in Windows 10 and Windows 8 If you're already struggling with Word not showing your watermark, just head to How to Remove a Watermark in Word on the Microsoft website, or just run the following steps via Windows PowerShell. Go to C:\Windows\Office\15.6\Outlook. On the Office 15.6 Outlook application, go to Settings > Personal > Preferences > Office tab > Customize User Styles. There you'll be able to change the layout and size. Click the arrow icon on the top menu bar and choose Watermark Style. Press the OK button and your watermark is removed.