Question Err_Internet_Disconnected

Feb 3, 2019
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This is said to be an issue with Chrome browser? I have tried everything suggested on various websites and Youtube videos and none of them make any difference to it randomly disconnecting from the internet.
It might coincide with when Avira installed a new version of itself without asking my permission first,but still does it after removing it completely.Could it have left something behind that's causing these problems?
Is there a definitive answer anywhere as to why this happens and how to fix it please?

Windows 7 with a hard wired connection to my router,no wi-fi.
 

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