When 7-Zip is finished checking the checksum of your ISO, you should have something like this. Next, click Details to expand an item and then take note of the SHA1 checksum.Īfter that, right-click on your Windows XP ISO file then point to CRC SHA and select SHA-1. For example, if you have Windows XP Service Pack 3 ISO, configure the search settings on the left pane to refine the results for Windows XP Service Pack 3 ISO. Once installed, go to Microsoft Subscriber Downloads page and search for the exact version of your ISO. To compare the checksum of your ISO against Microsoft, download and install 7-Zip File Archiver. If you already have a Windows XP ISO, you can check its checksum from Microsoft Subscriber Downloads page. Your only option to verify if the ISO is genuine or not is to check its MD5 or SHA-1 checksum from Microsoft. You can still search for its ISO copies on other websites but the thing is you are not sure if they are genuine or counterfeit. Unfortunately, after Microsoft discontinued support for Windows XP on April 8, 2014, all legit copies of Windows XP ISOs have also been discontinued to be offered as downloads.

Free download of Microsoft Windows XP sp1 iso.