Do You Get Windows Defender Error 0x800106ba?
Windows Defender may show the following error message
“Application failed to initialize: 0x800106ba. A Problem caused Windows Defender to stop. To start the service, restart your computer or search Help and Support on how to start a service manually.”
Read on for steps to fix this problem
Instructions
- Open the start menu and Control Panel
- Select System and Maintenance and then click Administrative Tools then open Services
- Double click on the Windows Defender service to open it, then chose the option to start automatic on start up, then click on the Start service button
- Save settings and reboot PC


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Defender started and then stopped.
Comment was “some services stop automatically if they are not in use by other services or programmes”
How do I correct this>
Regards
phil…. I get the same error message
did you resolve this issue and if so, how?
Ditto same message
This doesn’t always work. The problem comes from the miserable software architecture. If you are patient, wait 10mins and defender (or security essentials) eventually starts. When the system is turned on, defender is turned off and performs an internal system scan. After that, it should enable itself. If it doesn’t i.e. if you try to enable it like suggested above, before it is ready with the scan, nothing will happen. When defender or essentials eventually turns on, it first download the latest virus definitions. Just after that, it initiates another scan (no matter if automatic or scheduled scan is turned on or off). During this time, all system resources are used, giving you plenty of time for having some coffees. The whole boot up process until your harddisk is finally silent will take 20 to 30mins, where you can’t do anything. So, be patient. That’s the price you have to pay for free software.
How can I fix windows defender error 0x800106ba if It won’t let me on my internet or by following instructions when I get to properties and find windows defender and it won’t let me click on anything to click the start to fix it. Whatever this error is won’t let me on my internet on XP Windows Professional. Could anyone please help? Thank-You!