admin/environment/php extension/mbstring

To enable the mbstring library in Windows package installations of Moodle:

1. Open the php.ini file found in the moodle/apache/bin folder or Windows folder
2. Find the line: ;extension=php_mbstring.dll
3. Remove the ; at the beginning of the line
4. Restart apache if necessary

Note: This page needs to be enhanced by adding corresponding instructions for other kinds of Moodle installations.

See also

• Using Moodle php_extension mbstring is recommended to be installed/enabled forum discussion