May 12, · This is a confirmed working Windows 7 Installation ISO for all editions of Windows 7, both bit and bit. Windows 7 All-in-One Install ISO by Microsoft. Topics Windows 7, Install, ISO, Install, ISO Language DOWNLOAD OPTIONS download 1 file. Dec 02, · Download Windows 7 ISO from Microsoft (Trial Version) by admin. Posted on. December 2, December 2, Windows 7 was developed by Microsoft and it was released to manufacturing on 07/22/ and it became generally available on October 22, , less than 3 years after the release of its predecessor, Windows Vista.