I have just download a windows iso from microsoft and the checksum does match, unless lower and capital letters must be equal. Note: i copy pasted the checksum nothing was edited.
8f8e54759e54a25d4cbf869a418f57b7c4942a9b2672a8c3fb84396551608b7f
8F8E54759E54A25D4CBF869A418F57B7C4942A9B2672A8C3FB84396551608B7F