Once the initial login is made to a client Azure subscription MFA must be configured.
The standard will be to set all client MFA access to utilize our one login SMS server and the admin centrexIT email.
CentrexIT Client Subscription MFA configuration
PULSE SMS - 619-587-9632
email - admin@centrexit.com
This is set under the account button in the top right corner, click on name, then click on the security selection.