Hence, They came up with the plan of placing a watermark in the corner before the user legitimately unlocks Windows to avoid the misuse of their newest operating system, Windows 10. Like any other business, Microsoft doesn’t appreciate it when their hard work gets pirated, exploited, and redistributed for free. 2.7 Method 7: By Using A Digital License.2.5 Method 5: Activating Your OS By Purchasing The Key.2.4 Method 4: Using A Windows 10 Watermark Remover.2.3 Method 3: Changing Ease Of Access Settings.2.2 Method 2: By Modifying The Registry.2 How To Remove Activate Windows Watermark?.1 What Is “Activate Windows” Watermark?.