Preventing repeated PR_END_OF_FILE_ERROR messages
I have started getting repeated PR_END_OF_FILE_ERROR (and earlier some ERR_CONNECTION_CLOSED) messages when I first go to websites. After some exploring the only solution I have found is to manually disable "encrypted web scan" under Online Threat Prevention settings (although this seems to rather negate the point of this setting). Once I do this, and turn on protection immediately) I can access a website and pages within it.
Similar behaviour occurs in Firefox and Edge so it is not a browser issue as far I can see. In Edge the message is more Windowsy (and less helpful) -
"Hmmm… can't reach this page It looks like www.xxx.xx closed the connection"
So, can anyone advise a way to stop this behaviour?