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
    2015-03-19T15:00:18+00:00

    Will not allow to change from Manual to automatic in the Windows Defender Service.

    Trying to download Windows 10 Build 10041 and receive error 0x800705b4.

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  2. Anonymous
    2015-08-05T08:02:16+00:00

    defender will not turn on, using windows 10.  error code:  0x800705b4

    have auto update and restart.  computer had not restarted after security updates.  did a manual restart, problem solved.  had this issue before years ago. good luck.

    .

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  3. Anonymous
    2015-08-15T01:56:56+00:00

    My Surface wont update and it gave me this error (0x800705b4). I followed the steps above my mine is running.

    I haven't been able to update my Surface since 8/8/15.

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  4. Anonymous
    2015-08-15T14:21:58+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?

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