Given the end-of-service status of version 1703, it's highly recommended to use a more recent version of Windows 10. If you're running version 1703, you should consider upgrading to a newer version to continue receiving security updates and support.

Verification is critical to ensure the ISO hasn't been tampered with. For the Spanish (x64) version of 1703 , use PowerShell to check the file hash. Windows 10 v1703 (Spanish) [x86/x64] - Internet Archive

(codenamed "Redstone 2"), began with its official release on April 11, 2017

es_windows_10_multiple_editions_version_1703_updated_march_2017_x64_dvd_10191500.iso The "Deep Story": Why 1703?

While version 1703 was a milestone, its official support was relatively short-lived for home users.