I did an update to Raspian Stretch.
Now I have to notice that Chromium did'nt accept any websites instead of https:// ones.

If I try to get to a simple http: webpage it shows a message
ERR_ADDRESS_UNREACHABLE
But on my smartphone I can reach it without any problem. This happens to all www and http webpages.
All https webpages are working fine.
Any clue why this happens?

Are there some settings at the Chromium at Stretch set to avoid unsecure connections?
Thanks to some helpful inputs
Mac