Turn On or Off Microsoft Defender Periodic Scanning in Windows 10  

Simpuhl said:

Correct.

I can manually enable it by clicking the toggle, but modifying this single registry entry does not enable it.

Hmm, looks like something may have changed. I don't think it would work setting manually in the registry though.

Ando said:

Hi,
I run Malwarebytes Premium (MWB) on my desktop PC (successfully, I believe). I also turn on the Microsoft Defender Antivirus (MDA) option to keep using MWB but also have MDA check periodically for threats. This all seems to work OK ........ up to a point!!!!!
Every day I receive the message that MDA did its check and didn't detect any threats, and I see that every day the latest version of the Security Intelligence Update for MDA has been installed by the Windows Update procedure. All good.
However, for no apparent reason, and after varying numbers of days/weeks, the option for MDA checking gets turned off. I notice this because the messages from MDA cease as do the Security Intelligence Updates. I turn the option back on, and things return to normal for the next period of time.
I have now noticed what may be a reason for this ........ it seems that each time there is a Windows 10 update, Cumulative or Preview, the option is turned off.
I am wondering if this has been noticed by anyone else, if there is a known fix, or if Microsoft have been informed and are working on a remedy???
If any more info on this is needed, I am happy to supply. Regards.

Hello Ando, and welcome to Ten Forums.

Turning off the setting below in MBAM will allow you to run both MBAM and WDA together without issue.

Brink said:

Hello Ando, and welcome to Ten Forums.

Turning off the setting below in MBAM will allow you to run both MBAM and WDA together without issue.

I have the same situation. This doesn't lessen protection I hope.
I'm always leery about running two anti-viruses at once as they can clash.
(From lessons learned when I used to volunteer at McAfee's Forums, and when I was a Microsoft MVP).

Ex_Brit said:

I have the same situation. This doesn't lessen protection I hope.
I'm always leery about running two anti-viruses at once as they can clash.
(From lessons learned when I used to volunteer at McAfee's Forums, and when I was a Microsoft MVP).

Hello Peter,

Oh no, it won't. This just allows you to use both Microsoft Defender and MBAM.

If you registered MBAM with Windows Security, it would disable Microsoft Defender and only use MBAM.

Right, thanks.

Ex_Brit said:

Right, thanks.