Windows Defender has stopped

[REDACTED]

Hope I'm posting in the right place?
I have the paid version of Avast Internet Security,  Ever since I installed AIS. Windows defender comes up that it has stopped. & an error message - This program has been blocked by group policy error code 80070ec - I'm I missing something in the Avast settings?  TIA

[TheOwner]

Avast disabled Defender and prevent from starting it. It is normal behaviour. You cannot run 2 AV without problems so Avast disabled it without need your action.

[REDACTED]

Thx. for the reply

[bob3160]

Thx. for the reply

You should not be getting an error message. What version of Windows are you using

[TheOwner]

I have the same error if i want run Defender manualy. I think this is normal. After Avast uninstall no more error appear.

[bob3160]

I have the same error if i want run Defender manualy. I think this is normal. After Avast uninstall no more error appear.

After uninstalling Avast, Defender is again your default AV.
When you install Avast, Defender shuts itself down:

You can run it as a second opinion AV if you use the Settings option in Defender,
Make the changes indicated in the Window that opens:

Once done, you can now use Defender on demand for a second opinion.

[REDACTED]

On Windows 10 it is Windows that disables Defender when another av is installed.
On versions prior to Windows 10 it is avast who is doing so.

You can run Windows Defender while having avast installed.
To do so, tell avast to run in "quiet mode" (If I remember correctly that is how it is called)
Defender will run in real time and avast can be used as a on demand scanner that way.

[bob3160]

On Windows 10 it is Windows that disables Defender when another av is installed.
On versions prior to Windows 10 it is avast who is doing so.

You can run Windows Defender while having avast installed.
To do so, tell avast to run in "quiet mode" (If I remember correctly that is how it is called)
Defender will run in real time and avast can be used as a on demand scanner that way.

Eddy you aren't understanding the question. They aren't trying to run Avast in compatibility mode.
I believe my statement was Defender shuts itself down which is the same as Windows turns it off.

[bob3160]

Compatibility Mode is now called Passive Mode