Microsoft released offline download ISO files of Windows 10 latest build 9879 to public. The ISO files are available in both 32-bit (x86) and 64-bit (x64) editions. ISO files are available in following 4 languages: English (United States), English (United Kingdom), Chinese (Simplified) and Portuguese (Brazil).
You can download the ISO files of Windows 10 build 9879 from following link:
Download Windows 10 Build 9879 Offline ISO Files
Direct download links of these ISO files:
English (United States) (64-bit) (3.86 GB)
SHA-1 hash value: 9E58166123D333A76EED069FCC85A56F7E079BFD
English (United States) (32-bit) (2.98 GB)
SHA-1 hash value: 281F572068C869F4B5162F399C36D9DC32F12FC8
English (United Kingdom) (64-bit) (3.86 GB)
SHA-1 hash value: 46855FEBE2E0166375A66157CD282471056E076D
English (United Kingdom) (32-bit) (2.99 GB)
SHA-1 hash value: 384740ABAE5C0164E4E6D34D4307F3E8BD997AC9
Chinese (Simplified) (64-bit) (4.01 GB)
SHA-1 hash value: 2D635E0F16FC1AC1A3ACBDDBD8F76B96DD2B4676
Chinese (Simplified) (32-bit) (3.10 GB)
SHA-1 hash value: 1EB80DB82B669A687D9FC22974503F16122E06E1
Portuguese (Brazil) (64-bit) (3.84 GB)
SHA-1 hash value: ECC2361B06A4B7E9D6C66EF98F9529B1C1952C9C
Portuguese (Brazil) (32-bit) (2.95 GB)
SHA-1 hash value: E404F0D740FA91E10053424D4358A78D1F4DC61B
Product key: NKJFK-GPHP7-G8C3J-P6JXR-HQRJR
The free Technical Preview of Windows 10 will expire on April 15, 2015.