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Any modern version of Windows will show up here as "Windows NT". I think you should be able to determine the correct version through the user agent string. "Win

by rlu 14y ago

Any modern version of Windows will show up here as "Windows NT". I think you should be able to determine the correct version through the user agent string. "Windows NT 6.2" is Win8, 6.1 is Win7, 6.0 is Vista.