The “Activate Windows” watermark is a persistent reminder that your copy of Windows is not genuine. It can be annoying and embarrassing, especially if you are giving a presentation or working on a project. There are a few different ways to remove the watermark, but the most effective way is to activate Windows.
Activating Windows is the process of verifying that your copy of Windows is genuine. This can be done by entering a product key or by linking your Microsoft account to your Windows installation. Once Windows is activated, the watermark will disappear.