In a new Drupal installation, I have one error message, as follows:
Your system or network configuration does not allow Drupal to access web pages, resulting in reduced functionality. This could be due to your webserver configuration or PHP settings, and should be resolved in order to download information about available updates, etc… If you are certain that Drupal can access web pages but you are still seeing this message, you may add $conf[‘drupal_http_request_fails’] = FALSE; to the bottom of your settings.php file.
I ran a PHP info test, but I can’t see anything specifically about HTTP requests. There’s no php.ini file in the parts of the server that I can reach via FTP, so I can’t really know whether it’s an ini setting that’s to blame.
I think that it might possibly be a false positive, because the update check seems to work. But I didn’t find any explanation of it on the Drupal website or forum. So my questions is: how can I make a definitive check? And, in case I need to change something, what is the setting that fixes this and where is it set?