McAfee antivirus software provides complete support in virus scanning and fixing the issues with corrupted files. Now if you stuck in real-time scanning and it can't stay on, then you need to go through certain methods that can fix the issue. First and foremost thing you can try to restart the system, and then remove other antivirus programs already installed on your computer. Further, you can use SFC SCANNOW program to scan the system and also try to reset the security service center. For further details, you can connect with mcafee customer support phone number and get resolved with issues.