Press Window + R to open the Run dialog box on your system You need to modify the registry to remove the activate watermark from Windows 10. Here are the following solutions to remove 'activate window' watermark: Here in this article, we will learn some simple and easy methods to remove activate windows 10 watermark without purchasing a Product key. This “Activate Windows – Go to Settings to activate Windows” watermark appears on your system when you do not activate your copy of Windows 10 once the 90-day trial period is over. This watermark usually says “Activate Windows – Go to Settings to activate Windows”. If you always see an “Activate Windows” watermark at the bottom-right corner of your system’s desktop it means you haven’t activated your copy of Windows 10 once the 90-day trial period is over.