The IE11-Windows6.1-KB3021952-x64.msu file in your lists I believe is a MS mistake which they fixed on the technet download links, but elsewhere? The correct size is 52,267,471 bytes and the SHA-1 is 33AE2C3AC484A0EE9BA13597938F7AD0FA210F7A The one in your current list is 28,271,691 bytes and 34C3E214F853CE20E8E787276893FE210EBACBD6. I think MS used 32 bit IE11 one instead of 64 bit.