No videos on internet. firefox

imac won't play any videos off internet anymore.
nothing. no youtube, no matter what source.
maybe triggered by: someone installed software for new canon scanner/pronter/fax attached to this imac.
how do I enable video?
(also, but maybe irrelevant. chrome stopped loading alltogether. will mnot open any page.)
zw

nothing happens. or by now: happened.
just the format box, black.
someone advised that I download Adobe Flash (again).
that did the trick,

Similar Messages

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