Below are known SHA-256 hashes for the official English (US) 64-bit consumer ISOs. These are often used as the "gold standard" for verification: How can I download Windows 10 professional iso file now?

Use the Windows 10 Download Page to get the Media Creation Tool , which downloads and verifies the files automatically.

Verification is the only way to ensure an ISO from an "index" or third-party site is identical to the original Microsoft release. Microsoft typically uses the algorithm for these checks. Method A: Using Windows PowerShell (Built-in)