Windows Vista- Can't turn on Windows Defender

Anonymous
2010-03-20T07:30:29+00:00

I TRIED TO TURN ON WINDOW DEFENDER. IT GAVE AN ERROR 0X800705B4.

WHAT DO I DO NOW?

[Original title: 0x800705b4  window defender error code]

Windows for home | Previous Windows versions | Security and privacy

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Anonymous
2010-03-20T22:34:55+00:00

Hi tropicalvic,

Let’s follow these steps which should fix the issue.

Step 1

If you have any third party antivirus software and firewall disable them temporarily and make sure that the Windows Firewall is turned on. Then check if the issue reappears.

Step 2

  1. Open Run, and  type in services.msc then press Enter.
  2. In services window, locate Windows Defender service in the services list.
  3. Verify that the Status is Started. If the Status column is blank,

right click on the service and select Start.

4 If you get error trying to force start the Windows Defender service, try to change the Startup Type to Automatic, and then restart the computer.

Hope the information helps. Please post back and let us know.

Regards

Debleena S

Microsoft Answers Support Engineer

Visit our Microsoft Answers Feedback Forum and let us know what you think.

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  1. Anonymous
    2015-09-03T18:22:28+00:00

    I received the same message when I checked my update status. I tried several things without success so I decided to leave it alone and sure enough, this morning, updates were automatically installed. Hopefully, the same will happen with your issue.

    A TIP ABOUT UPDATES: If you do not have your computer hooked up to the internet all the time, you should click on the "Updates" in the "Settings" when you do connect to the internet and see if you have any pending updates to be installed. You will see a message saying updates are scheduled for a later time or an option to "update now". Click on the "update now" and install the updates.

    I discovered this because a friend does not have an internet connection in his apartment and he goes to the clubhouse at our apartment community and uses the Wi-Fi they have. He usually goes online about once a week and that is how I discovered this situation.

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  2. Anonymous
    2015-08-17T00:48:56+00:00

    Eu não fiz esta questão.

    Você vai encontrar os fóruns de língua portuguesa aqui:

    http://answers.microsoft.com/pt-br/protect

    You'll find the Portuguese language forums here:

    http://answers.microsoft.com/pt-br/protect

    -steve

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  3. Anonymous
    2015-08-16T21:27:01+00:00

    Eu não fiz esta questão.

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  4. Anonymous
    2015-08-16T20:13:57+00:00

    HI

    My defender status is empty and the startup is manual. I am not able to start it and not able to change to automatic. Appears error 577.

    I am using Microsoft Security Essentials. Schould the defender run paralell or it should be turned off?

    MSE includes the protection of Defender and it will be disabled when MSE is installed.

    -steve

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