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Windows 7: Windows Defender wont turn on?

02 Jun 2012   #1

Windows 7 home premium 64bit sp1
Windows Defender wont turn on?

Hi,I recently disabled Windows Defender but when i went to turn it back on it just hangs,and times out with the error 0x800705b4.
I've been into services and it's there but it wont let me start it and comes up with error 126 module could not be found.
Thanks in advance for any help.

My System SpecsSystem Spec
02 Jun 2012   #2

Windows 7 home premium 64bit sp1

Just found a fix for it. Here's the link it's the second answer post down by Sabrina Shen and step 2 "restore the windows registry key" Windows Defender won't start
My System SpecsSystem Spec
02 Jun 2012   #3

Microsoft Community Contributor Award Recipient


Nice find. Thanks for posting back.
My System SpecsSystem Spec

08 Jun 2019   #4

win7 64bit Ult. using: XP Mode, in English or Español, SUA, Bitlocker

I tried different things... registering dlls, looking in msconfig, trying to manually start the service in services.msc...

Maybe all the above helped.... Windows Defender started working after I noticed that Windows Security Essentials was installed as well... in Control Panel | Programs. After removing Security Essentials, Windows Defender worked great... like a racehorse out of its pen.

My System SpecsSystem Spec

 Windows Defender wont turn on?

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