Error codes: 8002400 & 800B 100 (unable to install KB947821)

I'm unable to install Windows UpdateKB947821.  A 800B 100 error code appears.  You can help me solve this problemsd please

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I checked the installed updates, KB2497640, KB2508272, KB2412687, KB2509553, KB2507618, KB2506223, KB2524375, KB2393802 who are not on the computer...

Please answer all the questions of diagnostic following by number in your next reply (no need to quote this post):

1. NONE of the updates in the box of the above quote is listed in the view installed updates, is that correct?

2. when (date approximately) fact you install Microsoft Security Essentials (MSE) and has been the computer fully-patched to Windows Update in time?

3. What antivirus application was installed before installing MSE, was your subscription always news, and did you uninstall it before installing MSE?

4A the pre-installed Norton, already expired free trial period at the time where that you replace it with a different background antivirus?

5. have you b uninstall Norton free trial AND THEN (b) download/run the Norton removal tool [1] & restart (c) BEFORE you installed another anti-virus application?

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[1] ftp://ftp.symantec.com/public/english_us_canada/removal_tools/Norton_Removal_Tool.exe

Tags: Windows

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