Windows 10: Unable to turn on real-time protection for Windows Defender

I recently decided to uninstall all my anti-virus software and wanted to revert to using Windows Defender as my main anti-virus. After uninstalling, I went ahead and open Windows Defender and saw that my real-time protection was disabled. I went into settings and when I was at the Real-time protection section, I couldn't turn it on and there was a text in yellow background saying "For your protection, some settings are managed by your security administrator". I don't know if it was my previous anti-virus software that did this, or I have malware on my computer. Does anyone know how to solve this?

:)

 

Unable to turn on Windows Defender real time protection

Hi guys, I'm a bit desperate here right now. *Confused

I have the same problem that this guy over here. I'm running Windows 10 Home x64, version 1607, build 14393.0.

I had to restore the PC to a previous point because I ****ed up some drivers. Then my AV (Bitdefender Free) started having some issues (they gui didn't display correctly) so I decided to uninstall it and just go with Windows Defender.

The problem is I can't get it to work... I get a notification in the Action Center saying to turn on the virus protection, when I click it, Windows Defender goes green(PC status: protected, Real time protection: on) for a second and then goes yellow again (PC status: Windows Defender is OFF, Real time protection: Handled by another AV program) and I get the notification again. If instead of clicking the notification I click "Turn on" on the Windows Defender gui, Windows opens another window, "Apps & Features" in settings, like asking me to uninstall the other, nonexistent AV.

Now, I've tried a lot of things...

• Of course, I have completely uninstalled Bitdefender. I used the official tool provided by them for this. There is nothing in the registry by bitdefender nor any file or folder by that name in my PC.

• I have tried every step listed here.

• I have tried to install another AV (Avast) and the uninstall it to see if this would "reset" somehow windows defender. (Nope.)

• I have tried option #2 here Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums

• I have run MBAM and nothing pops-up

In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender there is noDisableAntiSpyware key. But in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender there is a DisableAntiSpyware key and its value is 0. (Not sure if this is important but wanted to give you the info.)

Anyone has any idea? Right now I'm thinking of downloading another AV or just go without any and be done with it. *Huh

 

Unable to turn on Windows Defender real time protection

I'm unable to turn on Windows Defender real-time protection. It says "Handled by another AV program". But I have no AV program installed. Earlier I had bit-defender AV but I uninstalled it (Even I used bit-defender uninstaller tool). Still it shows the error. Please suggest me a solution. Is there any kind of tool which detects the AV or removes any left over AV files?
I'm currently on Windows 10 (version 1607) build 14372
Attaching the screenshot of windows defender.
Thank you

 

Unable to turn on Windows Defender real time protection

Once you have Bit Defender completely uninstalled, try option #2 here:
Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums