To activate WindowTop with a license key, you must be using the Standard Installer Portable version

A few moments later, an email arrived with a 25-character activation key. Elias opened the WindowTop settings menu, located the "Activation" tab, and carefully pasted the code into the field. With a single click of the "Activate" button, the interface transformed. The "Pro" badge appeared instantly, granting him permanent access to advanced features like "Set Top," "Shrink Window," and "Dark Mode." As the software confirmed his license was valid, Elias felt a sense of relief—his desktop was finally under his complete control.

  1. Purchase: Buy a license from the official vendor or an authorized reseller and receive an activation key (a string of letters/numbers) via email.
  2. Install: Download and install the latest WindowTop installer from the official site. Follow the installer prompts and launch the app.
  3. Enter Key: Open the program’s About, License, or Settings section and find the “Activate” or “Enter License” option. Paste the activation key exactly as provided.
  4. Verify: The app connects to the vendor’s license server to validate the key. On success, the app confirms activation and unlocks premium features.
  5. Manage: Note whether the license is per-device, per-user, or offers transferable activations; keep the key and purchase receipt in a secure location.

She right-clicked the CAD window. A new option appeared: "Always on Top (Click-Through)."