i'm currently reinstalling, there're some differences between what MS Update offers me & the UL here're some of what WUD offers but not MS Update (< means 'is superseded by'): [security updates] 2476490 < 2564958 2503658 < 2544893 2524375 < 2607712/2616676 < 2641690 < 2718704* 2525694 < 2555917 < 2778344 2556532 < 2709715 < 2799494 2719985 < 2757638 [non-security update] <many> here're some of what MS Update offers but not WUD: [security update] 2532531, bluetooth stack 2706045, JScript & VBScript 2797052, cumulative security update for ie8/9 [non-security update] 2718704*, unauthorized certificates 2574819, add support for DTLS 2592687, RDP 8.0 update 2598845, compatibility view list for ie 8 2670838, platform update (D2D, D3D, DirectWrite, WIC, WARP, WAM, XPS, H.264, JPEG)