admin/environment/php extension/xmlrpc
From MoodleDocs
To install the xmlrpc library on Microsoft Windows:
- Open the php.ini file, depending on your installation this may be found in the moodle/apache/bin folder
- Find the line:
;extension=php_xmlrpc.dll - Remove the
;at the beginning of the line - If necessary restart the web server, e.g. IIS or Apache.
To install the xmlrpc library on Linux/Unix
If you are using PHP as provided by the OS, you can just install the appropriate package, and restart the service (e.g. PHP-FPM or Apache):
- On Ubuntu and Debian, the command is: apt-get install php-xmlrpc
- On RedHat, Fedora, CentOS and SuSE, the command is: dnf install php-xmlrpc
If you compiled your PHP from source:
- You need to recompile PHP from source
- add --with-xmlrpc to the command line when you run configure
