Once you install your Avast secure browser and keep space, you might have to find a way to solve this problem. If you are worried that your Avast won’t open, you might have to use CCleaner software to uninstall a few apps that control the Avast from opening. Avast won’t open if there is extra software that prevents it from opening. There might also have other types of software that prevent the browser from space as well. Lately, some people have had problems with Avast secure browsers that will keep opening when the computer starts.