Had a couple of failing windows updates awhile back, this seemed to fix it right up!

1. Click Start, then click Run.

2. Type in the each DLL below, one at a time and hit OK.

REGSVR32 QMGPRXY.DLL
REGSVR32 QMGR.DLL
REGSVR32 ATL.DLL
REGSVR32 MSXML3.DLL
REGSVR32 WUAPI.DLL
REGSVR32 WUAUENG.DLL
REGSVR32 WUAUENG1.DLL
REGSVR32 WUPS2.DLL
REGSVR32 WUCLTUI.DLL
REGSVR32 WUPS.DLL
REGSVR32 WUWEB.DLL
REGSVR32 JSCRIPT.DLL

Note: Please try and register all the files. While registering each .DLL file you should get a "succeeded" message.