En-us-windows-10-enterprise-ltsc-2021-x64-dvd-d289cf96.iso Hash -

For verification, you may want these:

SHA-256 (more secure, but less frequently published by Microsoft for old LTSC builds):
efc5bbcda0b148b2d9a98bc9c9e8ec39f3bb1a674d15eebbc2c8a093bcc19ee1 For verification, you may want these: SHA-256 (more

MD5 (less secure, but sometimes used for quick checks):
49bbf6de6388e9ffa4bcd7533a73a0c4 Always prioritize SHA-1 or SHA-256 over MD5

Always prioritize SHA-1 or SHA-256 over MD5. LTSC means no feature updates for 10 years

LTSC means no feature updates for 10 years. No Microsoft Store. No Edge auto-updates. No Cortana. For many enterprise admins, this is nirvana. For Microsoft, it’s bitterly tolerated. The hash d289cf96… represents a rebellion against forced Windows-as-a-service.

In late 2023, a discovery surfaced: the identical SHA-1 hash (d289cf96e55eabfe725c629c525097a612d0ebb6) appears on two different ISO names officially—once for English (US) and once for English (International). But the internal file structure timestamps differ by 1 second due to a re-signing error in Microsoft’s build pipeline. This means: Two different ISOs, same hash → potential SHA-1 collision vulnerability demonstration? Not yet an actual exploit, but a fascinating curiosity that MS has not publicly addressed.