Use PowerShell’s Get-FileHash to calculate the ISO’s SHA256 hash, then compare the complete result with the matching product-and-language entry on Microsoft’s Windows 11 download page. A match meets Microsoft’s stated integrity check; a different hash does not.
Get the reference hash for your exact Windows 11 ISO
Open Microsoft’s Windows 11 download page and find its “Verify your download” section. Use the SHA256 value listed for the product and language you actually downloaded. The reference is tied to the specific ISO, so a value for another release, product, language, or architecture is not a valid comparison.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
Microsoft Windows 11 (USB) | $124.97 | Buy on Amazon |
| 2 |
|
Microsoft System Builder | Windоws 11 Home | Intended use for new systems | Install on a new PC |... | Buy on Amazon |
As an Amazon Associate I earn from qualifying purchases.
Microsoft’s consumer page provides a live table rather than one checksum that applies to every Windows 11 ISO. Check the current entry for your download instead of relying on a checksum copied from an unrelated page or an older release.
Calculate the ISO’s SHA256 hash in PowerShell
- In File Explorer, locate the ISO. Copy its full path, or note its folder and file name.
- Open Windows PowerShell and run the command below, replacing the example path with the ISO’s actual path:
Get-FileHash "C:UsersYourNameDownloadsWindows11.iso" -Algorithm SHA256 - Read the value beside
Hashin the output. Compare every character with the SHA256 reference for the same product and language.
Get-FileHash uses SHA256 by default, so the algorithm option is not strictly necessary. Including -Algorithm SHA256 makes the requested algorithm explicit.
#1 Best Overall
- Less chaos, more calm. The refreshed design of Windows 11 enables you to do what you want effortlessly.
- Biometric logins. Encrypted authentication. And, of course, advanced antivirus defenses. Everything you need, plus more, to protect you against the latest cyberthreats.
- Make the most of your screen space with snap layouts, desktops, and seamless redocking.
- Widgets makes staying up-to-date with the content you love and the news you care about, simple.
- Stay in touch with friends and family with Microsoft Teams, which can be seamlessly integrated into your taskbar. (1)
What the result means
If the hashes match
Microsoft says a matching SHA256 output confirms the file has not been corrupted, tampered with, or altered from the original. This confirms the downloaded file matches Microsoft’s reference; it does not check whether your PC can run Windows 11, whether you have an activation license, or whether installing Windows is safe for your files.
If the hashes differ
That ISO has not passed Microsoft’s stated match test. Download it again from Microsoft’s official page, then calculate and compare the new file’s hash. Do not continue as if the mismatched file were verified. Microsoft’s instructions specify the comparison but do not provide a detailed diagnosis for every cause of a mismatch.
Rank #2
- STREAMLINED & INTUITIVE UI, DVD FORMAT | Intelligent desktop | Personalize your experience for simpler efficiency | Powerful security built-in and enabled.
- OEM IS TO BE INSTALLED ON A NEW PC with no prior version of Windows installed and cannot be transferred to another machine.
- OEM DOES NOT PROVIDE SUPPORT | To acquire product with Microsoft support, obtain the full packaged “Retail” version.
- PRODUCT SHIPS IN PLAIN ENVELOPE | Activation key is located under scratch-off area on label.
- GENUINE WINDOWS SOFTWARE IS BRANDED BY MIRCOSOFT ONLY.
What to check before installing
Hash verification is only a file check. Microsoft’s Windows installation-media guidance treats hardware eligibility and installation choices as separate considerations. You can mount an ISO or use it to create installation media on a USB flash drive or DVD.
Free tools Windows power users keep installed
One-click scans. No signup required.
If you choose bootable media for a clean installation, Microsoft warns that this process wipes the hard drive and existing Windows installation, removing files and installed apps. Back up files you need first, and check that the device meets Windows 11 requirements; a matching ISO hash does not establish either point.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
