Select the setup.exe file to launch the install process.ĭuring setup, select the Keep Windows settings, personal files, and apps option. Select the ISO file to open it, which lets Windows mount the image so you can access it. Open File Explorer and go to where you saved the ISO. Download Windows Insider ISOs In-place upgrade with a Windows Insider Preview ISOĭownload your chosen ISO from the Windows Insider ISO page by saving it to a location on your device or creating a bootable USB.