I have had issues with: 1. AVG Internet Security interfering with AVG PC Tune Up and had to uninstall PC Tune Up. 2. AVG Internet Security interfering with Microsoft Excel causing files to open as Read Only. This has been an ongoing issue and significantly interfered with my research work ever since the upgrade. 3. AVG Ransomware block is causing significant issues. 4. AVG Internet Security blocked access to my browsers for > 1 week. 5. AVG Internet Security interfered with my use of Malwarebytes software for which I cannot be compensated. This has caused me not just inconvenience and time lost in my work but cost incurred for a professional computer troubleshooter.