Avast updating program
Avast is one of the most popular antivirus programs out there.
Many users who were using Avast on previous versions of Windows installed it on Windows 10, as well — some of them change their mind and switched to Windows Defender, but that’s a story for another day.
But if the issue is still present, you have one more option to try.
So, just disable your current antivirus (in most cases this is Windows Defender) and try to install Avast again. This error will remind you that having two antivirus programs installed on your computer is not a good thing.
Sometimes, Avast may fail to update its virus definitions.
A startup scan will launch automatically on boot up and is a useful, regular security check.
The optimized scan engine in the latest version means scanning of text content is significantly faster than previous versions. Improved memory usage means Avast Free Antivirus should cause less strain on your system so you can continue with other tasks faster.
Simple, improved UI The latest version includes a much simpler and quicker to use UI than previous versions.