Situation: When attempting to install Photoshop 2020 on a Windows 10 computer, you may receive error code 103.
Troubleshooting: Make sure you run latest version of Windows 10. Please check the Photoshop 2020 system requirement and make sure your system meets the requirement.
In some other cases, make sure the installation files are not damaged. If you installation files are in a shared location, please make sure you have good connection. or copy the files to locat drive.