Deprecated This option is no longer in use (since version 9.2) and will be removed in Q2 2020.
Usage A nonce is a number used once and is used to ensure the integrity of requests sent by the plugin to Microsoft. You should enter here a random password like string that the plugin will use when generating and validating the nonce.
Important When creating and validating nonces, the plugin expects the following global constant to be present in your WP_CONFIG file
define('NONCE_SALT', 'YOUR SECRET GOES HERE');
Default value empty.