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

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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
    2014-12-11T15:49:12+00:00

    I got lost. None of the methods you kindly suggested seems to work.

    My last attempt was sfc/scannow but the answer is that it is impossibile to start the recovery (ripristino) service.

    Is there any reliable troubleshooting guide that I can use?

    Thanks.

    Lelio

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  2. Anonymous
    2014-12-11T15:56:35+00:00

    What exactly are you trying to do? If you are trying to start Windows Defender in Vista, it's not going to happen if your security program also has an anti-spyware function. This is by design as two programs doing the same job can conflict with each other.

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  3. Anonymous
    2015-02-20T12:56:05+00:00

    I faced same error today I went to read solution but everything was OK. Then I went to the settings of the Windows Defender and I turned off realtime scanning and I turned it on again and everything was fine.

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  4. Anonymous
    2015-03-17T09:12:25+00:00

    i am not able to click on start and stop automatic.......

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