In some cases the avast open a windowasking me a password?
What is this?
what password?
Where I find this password?
I’ve registred already the avast. ??? ???
Are you using the Home or Pro version?
Right click the system tray icon (“a”) and choose the option for password protection… You can disable it, just let it blank… 
Are you using the Home or Pro version?
Right click the system tray icon (“a”) and choose the option for password protection… You can disable it, just let it blank…
I tried to do this but I still receiving the message of wrong password, the problem is that i never put one. There is a way to disable this?
Try do uninstall and install again