Windows Defender is installed

I noticed that my Windows Defender was no more on my computer.  I tried to reinstall and in the installation process, I get the message: "Service"Windows Defender"(WinDefend) was able to start.  Make sure you have sufficient privileges to start system services.  What should I do?

Windows Defender has been replaced by Microsoft Security Essentials...

Windows Defender is an Anti-Spyware Protection, this is not the best either.
MSE provides anti-virus and Anti-Spyware protection, you can download the latest version here...
You must be logged on as administrator to install the program.

Tags: Windows

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    Windows Update error 80070643 can happen for several reasons. The most common cause is a problem with the .NET Framework is installed on the computer.

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    1. Click on the link below

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    If this post can help solve your problem, please click the 'Mark as answer"If you find it useful, mark it as useful by clicking the 'Useful' button at the top of this message. Marking a post as answer, or relatively useful, you help others find the answer more quickly.

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    If you can continue to follow this thread maybe someone else will have another suggestion for your question.

    Kind regards...

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    Original title: Windows Defender

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  • Vista - Error Code: 80070005 (could not install Windows Defender definitions)

    ·        I got s error code 80070005 when:

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    Downloaded, it would not move.  I regularly got these definitions of Defender updates and installed without problem, since a few years - until Monday July 5, for some reason any.  I'm not aware of any change that I made for all programs, because I downloaded and installed my update of definitions last defender about a week earlier.

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    Method 2:

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    Thanks again, Jim North

  • Cannot install updates of the Windows Defender definitions

    When I try to install definition updates, I get the following code: 0 x 80070643.  Help, please.  Thank you

    Hi wkorna,

    This problem occurs when Windows Setup encounters an error. Error code 0 x 80070643 error code 0 x 643 are provided by Windows Installer. These error codes are generic errors that basically indicate that an error has been detected by the Windows Installer.

    I suggest you follow the steps mentioned in the link below

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    http://support.Microsoft.com/kb/958052

    You can also download and install the latest definition update manually

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    http://support.Microsoft.com/kb/923159/

    Let us know if it works or you need help

    Thank you, and in what concerns:

    Ajay K

    Microsoft Answers Support Engineer

    Visit our Microsoft answers feedback Forum and let us know what you think.

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