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Unable to install Microsoft Security Essentials


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#1 rppgaty

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Posted 13 May 2014 - 07:05 PM

Hello. 

     

I'm unable to install Microsoft Security Essentials. This system experienced an unexpected loss of power after being unplugged from the wall. Microsoft Security Essentials refuses to install exiting with the error code 0x80070645

 

I searched Google and came across this Knowledge Base article http://support.microsoft.com/kb/2483120, I followed the instructions, and removed the registry keys, however I'm still unable to install MSE. I've also tried the FixIt, but that doesn't resolve the issue either. 

 

I came across HKLM\SOFTWARE\Microsoft\Microsoft Antimalware Setup, and so I thought "This might be causing that error." However, my attempts to remove this key, and the subkeys fails with the error message : Cannot delete Microsoft Antimalware Setup : Error while deleting key. 

 

After searching Google for Error while deleting key, I came across this Knowledge Base article : http://support.microsoft.com/kb/2021860, I followed the instructions and downloaded RegDelNull, however that gives me this error message : A null context handle was passed from the client to the host during a remote procedure call.

 

Any ideas? 



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#2 OldPhil

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Posted 13 May 2014 - 07:58 PM

An idea try restoring back a day or two prior to the outage!


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#3 donetao

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Posted 13 May 2014 - 08:01 PM

Hello! MSE can be hard to install at times. You might try some of these things.

http://windows.microsoft.com/en-us/windows/i-cant-install-microsoft-security-essentials



#4 rppgaty

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Posted 22 May 2014 - 09:05 PM

An idea try restoring back a day or two prior to the outage!

Tried that. Can't.

 

Hello! MSE can be hard to install at times. You might try some of these things.

http://windows.microsoft.com/en-us/windows/i-cant-install-microsoft-security-essentials

I skipped over that and went straight to the issue I was having : http://support.microsoft.com/kb/2483120



#5 donetao

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Posted 22 May 2014 - 09:12 PM

Hello??? Give this a try??

http://answers.microsoft.com/en-us/protect/wiki/mse-protect_start/uninstalling-microsoft-security-essentials/316493c2-8885-46b0-afba-28ebd45c0838



#6 Willy22

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Posted 23 May 2014 - 01:10 AM

A power outage Always messes up ones computer. Run this program

http://www.bleepingcomputer.com/download/windows-repair-all-in-one/

with all boxes ticked. Follow the instructions. It will put your system back to the default Win 7 state. Then try to remove MSE with this tool:

http://www.bleepingcomputer.com/download/microsoft-security-essentials-removal-tool/



#7 rppgaty

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Posted 25 May 2014 - 12:39 PM

A power outage Always messes up ones computer. Run this program

http://www.bleepingcomputer.com/download/windows-repair-all-in-one/

with all boxes ticked. Follow the instructions. It will put your system back to the default Win 7 state. Then try to remove MSE with this tool:

http://www.bleepingcomputer.com/download/microsoft-security-essentials-removal-tool/

 

Thank you Willy22, after running th Windows repair all in one, I was able to delete that registry key that was giving me that error before. I ran the FixIt and attempted to re-install MSE afterwards, but MSE still fails with the same error.






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