Windows 10: Wasn't defender supposed to turn off by itself having Webroot?

I made the upgrade from 8.1 to win 10 and dabbing around with it now. I had latest version of webroot AV installed. After the transition, it seems that both defender and webroot are running at the same time. Now obviously I don't want two protection system. It'll slow crap down. Defender hasn't automatically turned off. Do I really have to go through manual turn offs through registry and junk?

:)

 

How to fix KB2267602 (definition 1.211.411.0) - Error 0x80070643

I'm also getting this error

Background - after November Update Defender was (initially) turned on. This despite the fact that I have Norton installed (and running) and as I understand it, Defender is supposed to automatically disable itself in this situation.

After a further restart Defender did turn itself off but not before Windows Update attempted to download the latest definitions - and now continues to do so - failing to install the update each time.

I note today that Microsoft have pulled the 1511 update from their ISO site - seemingly without an explanation.

Related perhaps?

 

Windows Defender keeps turning off

I have had Windows 10 since summer of 2017. I've used Windows Defender almost exclusively. I used Spybot for a bit, but it wasn't working properly, so I removed it fully and turned Defender back on (this was last year). For the last 2ish months, it keeps
turning itself off. I am in no way turning it off. I have no other spyware/malware/virus programs on my PC. This is getting very aggravating. To make things worse, today it wouldn't let me turn it back on. Any help would be appreciated.

 

Not sure, what you mean, that it is still running, WD service is running, even if the protection is disabled.
Version WSA version 9.0.0.64 is officially compatible, but Windows 10 can still have trouble detecting it.
You can disable WD yourself. Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums

Windows Defender Real-time Protection - Turn On or Off in Windows 10 - Windows 10 Forums

 

I believe you have to do the manual turn offs. If you try and just disable real time scanning via the UI, W10 nags about it in the notification area. I was zipping a file the other day and defenders CPU use shot up quite a bit.

 

It may be that Windows Defender was not turned off because Webroot SecureAnywhere products are designed to get along with other antivirus. To turn off Windows Defender see the tutorial:

Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums

 

When I upgraded my PC to windows 10 Defender got turned off. When I upgraded the laptop to Windows 10 Defender was still running at same time as Webroot. I then un-installed Webroot and then run their clean up tool WRUpgradeTool.exe. When I then re-installed Webroot Defender was deactivated.