I have faced the problem several times, even after changing the Norton antivirus program I was using. And I figured out it's more of a system problem than your antivirus. However, the Norton antivirus software could also cause this problem in the system. I usually use some basic troubleshooting methods, and they help me resolve the issue.
* Make sure the Norton antivirus and PC are running on the latest version.
* Using the system in safe mode.
* Checking the compatibility of the system and antivirus program.
* Reinstalling the Norton antivirus product you are using.
* Removing the cache from your device and freeing up some space.
* Turn off any other antivirus on your device.
* If necessary, connect your antivirus product to the customer support team.