Situation: The client has enabled Azure MFA and would like to call office extension number. However, they can’t figure it out how to do it.
Procedure: You need to do that in Active Directory Users and Computers. This is the format: +1 8479450340×144. Note: 1. there is a space between +1 and area code 847. 2. add x between the office number and extension (no space).
