Windows Defender's "Controlled Folder Access" feature is permanently off

Just updated to Win 10 ver 1709  (fall creators update) and I find that the Windows Defender  -> Settings -> Virus & Threat Detection -> Virus and Threat Detection Settings -> Controlled Folder Access feature is grayed out in the "off" position.  I tried to activate this feature using the Group Policy editor per instructions on a couple of helpful sounding web sites but there was no change; even after rebooting Windows. Net result is this feature can't be used.

Side note: the Real Time Protection switch is likewise grayed out in the off position. 

Second side note: My main antivirus  is Symantec Security Suite. I tried temporarily disabling it to see if the gray-out went away. It didn't.

Any useful advice VERY welcome!!

Kind regards,

Lenny W

**Moved from:  Windows / Windows 10 / Security & privacy **

Answer
Answer

This is by design, since folder monitoring requires Defender’s on-access (real-time) protection. So you can’t enable Controlled folder access when you have a third-party AV app installed and Windows Defender is running in its Limited Periodic Scanning (on-demand) mode. This new feature is only available when Windows Defender’s is running in a standalone configuration, and its real-time protection is turned on, as indicated in the Requirements section of this documentation:

 

https://docs.microsoft.com/en-us/windows/threat-protection/windows-defender-exploit-guard/controlled-folders-exploit-guard

 

 

GreginMich

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Question Info


Last updated September 16, 2020 Views 3,095 Applies to: