Friday, December 31, 2010

Microsoft Security Essentials installation error 0x80070643

At, the post explains how to solve the problem when you are receiving an error 0x80070643 during installation of Microsoft Security Essentials.

Yesterday, when I installed Microsoft Security Essentials on my sister's laptop, I encountered this issue. Unfortunately, the post mentioned above doesn't help. However, I noticed that all the Google search results were redirected to a strange address. Thus I suspected that some malwares prevented the installation from being completed.

I downloaded Spybot-S&D and cleaned the malwares. It had difficulty when clean the harmful redirection in the hosts file. I had to obtain the full control through the security tab of the file properties.

After the removal of the malwares, Microsoft Security Essentials was installed successfully.

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