An unexpected error occurred. Something may be wrong with www.remarpro.com or this

For permanent failure:
Make sure to use one of these functions is enabled: allow_url_fopen and curl_init . You can check with phpinfo().
One of them is necessary for update/install.

I’ve had this issue on a fresh WordPress install on a new VPS (Minimal CentOS.) I checked that allow_url_fopen and curl_init were enabled:

if (function_exists('curl_init')) {
	echo 'curl_init exists';
} else {
	echo 'no curl_init';
}

if( ini_get('allow_url_fopen') ) {
	echo 'allow_url_fopen exists';
} else {
	echo 'no allow_url_fopen exists';
}

Turns out that WordPress needs bindutils in order for the Add plugin screens to work:

yum install bind-utils

I am having the same issue in my WordPress installs. I have two installs running in a server with CentOS 6 and recently I have not been able to install plugins from my site’s back end.

Anyone have solved this? I don’t know where else to check. I stopped my firewall, checked folder permissions, restart httpd service, uninstall GNOME Desktop Windows that I have recently installed and thought maybe it was causing it… I dont know what else to do.

Well, thank God I got it to work!!!

It was indeed issues with my server. Through Webmin I updated all the modules that were outdated (185 in total) and mysteriously that solved this issue.