Sometimes it might become annoying for you and you would like to disable this automatic scanning as it takes a few extra seconds to scan the file and it also causes following problems to a few users:

It doesnt download a file and gives warning message: “Blocked: Download may contain a virus or spyware“, even you [...]

Sometimes pop-up windows are too baby to affectation all their content, and they are not consistently resizable by default. After some research, I begin that in Firefox you can override this behavior by alteration one of the abounding user preferences.
To accomplish them consistently resizable:
Method 1
type about:config in the Location Bar and columnist Enter. Find dom.disable_window_open_feature.resizable [...]