index.php) works, but after a while, some pages are blocked from loading. I don't see any error message, nor do I see any warning message from Windows. The site just is not loaded as if the content is zero bytes long.
Ping works, on other devices the site is loaded, it is only on Windows with realtime protection enabled that it is blocked (any browser, including
curl). When I disable realtime protection, the pages are accessible.
On a newly installed system the site works great, but after some days it is blocked.
The web server's logs show no problems.
I can't explain this strange behavior. Do you know why this happens?