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.