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
    2013-11-02T22:16:42+00:00

    I've tried force starting Defender, but under the services list it says Windows Defender Service is Running, with Startup Type Automatic (Delayed Start, Trigger Start).

    Despite this, In the Action center it still states that Windows Defender is turned off for both Spyware and Virus protection. Selecting to turn it on brings up the Defender screen, that then gives the above error code (after the timeout period) when I click Turn on.

    I've uninstalled all the free antivirus trials my laptop came with, but Defender just will not switch on.

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  2. Anonymous
    2013-12-27T09:09:54+00:00

    Hi ,

    Greetings!

    It happenes due to to some missing dll,if that is the case with you ,try popping in windows setup cd,and at cmd promt run ( sfc /scannow) cmd.

    Doing this solved my problem ,might help you as well.

    Thankyou.

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  3. Anonymous
    2013-12-31T00:34:31+00:00

    it i said that is running, i cant restart it. What to do? please answer as soon as posible

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  4. Anonymous
    2014-01-06T14:23:04+00:00

    mam am having the saving problem............... i followed the steps u have given........... 

    but couldn't get rid of the problem............  so please help me a.s.a.p............

    thank you.......

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