thank's a lot for both the 2 responses i have got,
I do not have a "avast cleanup" but i have already uninstall and reinstall avast web browser many times, with administrator privileges.
But the browser doesn't want to open anymore.
Is there any log files i can inspect to have an idea of the problem ?
I have already try to desactivate the avast antivirus and the firewall, thinking it was a filter rule somewhere into my Windows 10 pro system but i have got the same result. The browser doesn't want to open !!!
I haven't any idea where to search
Thank's for your attention