0x8002801D 

Also Register or reinstall the files for me now Recommended)
Let me read about more steps that might be required to solve the problem – in a loop.

It has been posted that re-registering the MSXML3.DLL fixed this problem

1. Go to Start, select Run, and type:
2. regsvr32 MSXML3.dll
3. Click on OK or hit ENTER

If that hasn't helped you may need to re-registered some more files:

1. Click Start.
2. Choose Run.
3. In the Run box, type (pressing okay after each one) :-

net stop wuauserv

Repeat for the following:
regsvr32 wuapi.dll
regsvr32 wups.dll
regsvr32 wuaueng.dll
regsvr32 wuaueng1.dll
regsvr32 wucltui.dll
regsvr32 wuweb.dll
regsvr32 MSXML3.dll
regsvr32 qmgr.dll
regsvr32 qmgrprxy.dll
regsvr32 jscript.dll

net start wuauserv

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