explorer.exe crash

I have been using only CIS (without antivirus) and Antivir premium (without web guard and mail guard) for real time security.After installing CIS I am getting explorer.exe crashes twice daily while surfing the internet,as seen in the picture.Is there any way to stop this.
My default browser is Opera.

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I guess your using Defense+? If so make sure explorer.exe is set to a “Windows System Application” in

Defense+ > Advanced > Computer Security Policy

It has been already chosen as a windows application, as in the pic.
But I also added C:/Windows/explorer.exe (running process) as a windows system application.I hope this prevents the explorer.exe crash.

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