1. Before you start installing Illustrator 2025, make sure to turn off your antivirus. Click the Start menu, type Windows Security, and then click on it.

2. Click Manage settings.

3. Turn off all the protection features.

4. Extract the zip file.

5. Open the extracted folder.

6. Right-click on the iso file and select Mount.

7. Double-click the autoplay.exe. If UAC pops up, press Yes.

8. Press the Install button.

9. Press the Continue button to start the installation, and then wait until it is completed.

10. You can launch Illustrator immediately after the installation is finished.

11. Now you have a fully functional Adobe Illustrator 2025.