Windows Defender Error 0x800106ba (Not Running)!

qstar07

New Member
Messages
4
My Windows Defender was running even a week ago!
Yesterday, I noticed a red cross on my action center.
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It opens up the Windows Defender (at risk state), and after a minute, it shows this 0x800106ba error.
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I tried several procedures from Microsoft Helpdesk, but none of it actually helped! Is anyone here who can help me to fix it!
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Samsung
    CPU
    Intel Dual-Core
    Motherboard
    Asus
    Memory
    3 GB DDR2
    Graphics Card(s)
    Intel G41 Express Chipset
    Browser
    Mozilla Firefox
    Antivirus
    Windows Defender
Hi,
Do You Have any third party antivirus there?if not then update widows defender and check for windows update even the optional ones.
 

My Computer

System One

  • OS
    Windows 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    HP
    CPU
    Intel Core i7
    Graphics Card(s)
    Nvidia Geforce GTX 680
    Sound Card
    idfk
    Screen Resolution
    15' 1080p display
    Internet Speed
    70Mbps
    Browser
    Google Chrome Canary
    Antivirus
    AVAST Premiere 2015

My Computer

System One

  • OS
    Windows 8.1, Windows 7, Linux Mint 14
    System Manufacturer/Model
    HP Pavillion g4
    CPU
    Intel(R) Core(TM) i3-2330M CPU @ 2.20GHz
    Memory
    4 GB
    Graphics Card(s)
    1 GB Radeon Graphics
    Monitor(s) Displays
    Generic PnP Monitor
    Screen Resolution
    1366x768
    Hard Drives
    500 GB HDD
In addition to Arpan's suggestion, please make sure your Windows installation is still activated as that error can be indicative of an expired license as well.
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    CPU
    Intel G2020
    Motherboard
    ASRock B75M-DGS R2.0
    Memory
    8GBs @ 1333 MHz
    Hard Drives
    Samsung 840 EVO
    PSU
    400w
    Internet Speed
    57/11
Hi,
Do You Have any third party antivirus there?if not then update widows defender and check for windows update even the optional ones.

I do not have any other antivirus. I tried updating Windows and there was 1 important update available: Definition Update for Windows Defender - KB2267602 (Definition 1.169.1323.0) : 3.6 MB. I tried installing it, and it failed with Error Code 800700005! I'm set to auto update!

Hello,

Since I haven't encountered this same issue, so I searched for the error code. I found this:
Fix: Windows Defender Error Code 0x800106ba Application failed to initialize

Have you tried the above fix?

I tried that, but went into an error on trying "regsvr32 initpki.dll" (I did it on Command Prompt (Admin)). Plus, I had to change a few names from the list, like "regsvr32 wucltui.dll" > "regsvr32 wucltux.dll".


In addition to Arpan's suggestion, please make sure your Windows installation is still activated as that error can be indicative of an expired license as well.

I don't think my activation will expire. I'm using Windows 8.1 Pro!
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Samsung
    CPU
    Intel Dual-Core
    Motherboard
    Asus
    Memory
    3 GB DDR2
    Graphics Card(s)
    Intel G41 Express Chipset
    Browser
    Mozilla Firefox
    Antivirus
    Windows Defender
I tried installing it, and it failed with Error Code 800700005! I'm set to auto update!

That information would have been very useful if included in your first post. Anyway, try this:

How do I reset Windows Update components?

If you tried that already run sfc /scannow (from an elevated command prompt) to see if it finds any errors.



 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    CPU
    Intel G2020
    Motherboard
    ASRock B75M-DGS R2.0
    Memory
    8GBs @ 1333 MHz
    Hard Drives
    Samsung 840 EVO
    PSU
    400w
    Internet Speed
    57/11
I tried installing it, and it failed with Error Code 800700005! I'm set to auto update!

That information would have been very useful if included in your first post. Anyway, try this:

How do I reset Windows Update components?

If you tried that already run sfc /scannow (from an elevated command prompt) to see if it finds any errors.




I ran sfc /scannow and it completed with an error. It says "Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log...."
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Samsung
    CPU
    Intel Dual-Core
    Motherboard
    Asus
    Memory
    3 GB DDR2
    Graphics Card(s)
    Intel G41 Express Chipset
    Browser
    Mozilla Firefox
    Antivirus
    Windows Defender
I ran sfc /scannow and it completed with an error. It says "Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log...."

Now run Dism /Online /Cleanup-Image /RestoreHealth and, if all errors are corrected, test Defender again.
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    CPU
    Intel G2020
    Motherboard
    ASRock B75M-DGS R2.0
    Memory
    8GBs @ 1333 MHz
    Hard Drives
    Samsung 840 EVO
    PSU
    400w
    Internet Speed
    57/11
Now run Dism /Online /Cleanup-Image /RestoreHealth and, if all errors are corrected, test Defender again.

I did "Dism /Online /Cleanup-Image /RestoreHealth" and it completed successfully. But it didn't fix the Defender.
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Samsung
    CPU
    Intel Dual-Core
    Motherboard
    Asus
    Memory
    3 GB DDR2
    Graphics Card(s)
    Intel G41 Express Chipset
    Browser
    Mozilla Firefox
    Antivirus
    Windows Defender
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