Error Code 0x800106ba on trying to open Windows Defender

title clarification: Error Code 0x800106ba on trying to open Windows Defender.I did have McAfee but I uninstalled it. Windows Defender still won't operate and still gives the same error code. I'm sick of it. Can SOMEONE please help!

Error Code 0x800106ba on attempting to open Windoes Defender. I did acquire McAfee at some point but I uninstalled it ages ago but I still have the same error message every time I try to open Windows Defender. Please help
 

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Last updated July 1, 2018 Views 926 Applies to:
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Error Code 0x800106ba on attempting to open Windoes Defender. I did acquire McAfee at some point but I uninstalled it ages ago but I still have the same error message every time I try to open Windows Defender. Please help


It is not just McAfee that causes problem with Defender:

Windows Defender:

If you have AVG, McAfee, Norton, Microsoft Security Essentials, etc installed, they will either have a conflict with Windows Defender, or disable it.

Microsoft Security Essentials has its own built-in version of Defender and should automatically disable Vista's version of Windows Defender.

If it doesn't:

http://windows.microsoft.com/en-us/windows-vista/Turn-Windows-Defender-on-or-off

Turn Windows Defender on or off information at the above Microsoft link.

Hope the above explains common compatibility problems with Windows Defender and other Security Programs.

Cheers.

 


Mick Murphy - Microsoft Partner

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Hi,

Did you run the McAfee Removal Tool?

McAfee Removal Tool
http://service.mcafee.com/FAQDocument.aspx?id=TS100507

=======================================

Troubleshooting Windows Defender
http://support.microsoft.com/kb/555957


"%ProgramFiles%\Windows Defender\MsAsCui.exe" is the default Defender folder

Start - type in Search box -> Windows Defender - find at top of list - Right Click on it -
RUN AS ADMIN

If no joy use Start - Computer or Windows Explorer to navigate to that folder and create a
Shortcut to put on Desktop and Start Menu. You can also Right Click any exist shortcuts and
see if they point to there.

Target
"%ProgramFiles%\Windows Defender\MsAsCui.exe"

Start In
"%ProgramFiles%\Windows Defender"

How to Turn Windows Defender On or Off
http://www.vistax64.com/tutorials/93118-windows-defender-off.html

--------------------------------------

Maybe something here if needed :

What is showing/causing the error message? Some security/anitvirus/antispyware products can
cause this error. Which of those do you use INCLUDING any that your ever had even those
uninstalled (the remnants can cause issues). McAfee is just an example of what many can do.

Start - type in Search box - Services - find at top of list - Right Click - Run as Admin

Windows Defender - set to STARTED and AUTOMATIC

or set to STOPPED and MANUAL    if needed

Fix for the 800106ba problem.
http://support.microsoft.com/kb/931849

McAfee error report (an example)
http://service.mcafee.com/faqdocument.aspx?id=TS100610&lang=en_US&prior_tid=2&AnswerID=16777216&turl==http://kb.mcafee.com/infocenter/index?page%3Dcontent%26id%3DTS100610%26actp%3Dsearch

Also check :

http://social.answers.microsoft.com/Forums/en-US/vistasecurity/thread/574fb871-034c-4b42-b800-328af16a9177

Hope this helps.


Rob Brown - MS MVP - Windows Desktop Experience : Bicycle - Mark Twain said it right.
Rob Brown - Microsoft MVP - Windows and Devices for IT 2010 - current
Windows Insider MVP 2016 - current

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