KB974417 is re-offered by Windows Updatehttp://blogs.msdn.com/b/smondal/archive/2010/07/13/kb974417-is-reoffered-by-windows-update.aspxYou might have seen an issue with the patch KB974417 where after installing patch KB974417( http://support.microsoft.com/kb/974417 ) , it gets re-offered by WU. I found that after installing the patch the files (mscorlib.dll,SOS.dll,mscorwks.dll,mscordacwksen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)