Websites Suddenly Closing Connections

Over the last couple of months, I’ve seen my accessibility to websites diminish.

Websites like; NBC.com Starbucks and Home Depot to name just 3.

When I try to access them, via any browser, I get this:

This site can’t be reached

www.nbc.com unexpectedly closed the connection.
ERR_CONNECTION_CLOSED

I’ve searched the web and tried everything recommended, to no avail. Then I realised it might be a security setting. But these are reputable companies and site, with apparently valid certs.

This is getting very frustrating.

Any thoughts

Try cleaning your browsers cache.
No problem here opening the site:

https://screencast-o-matic.com/screenshots/u/Lh/1552080013171-74682.png