Powershell CMDlets for MFA Settings?

No Sadly there still no powershell way to update the Authentication Phone / info directly. ManishKKutty 

Se the uservoice here:

https://feedback.azure.com/forums/169401-azure-active-directory/suggestions/14795625-authentication-phone?tracking_code=cf9e1592ed0a22ed3965812d156fdef5

Kaspar_Danielsen The simplest method is via portal.azure.com.  Navigate to Azure Active Directory->Users, then click Multi-Factor Authentication in the upper menu bar.  Search for the username, then select it.  You can then click Disable under "quick steps". 

If you're using Conditional Access policies to enforce MFA, then the settings above are not used.  In this case, you can remove MFA via PowerShell:

#Connect to Azure AD

Connect-MsolService

#Disable MFA for a user $mfa = @() Set-MsolUser -UserPrincipalName User@domain.com -StrongAuthenticationRequirements $mfa

Indira1390 

I am using below logic to extract user MFA details and default method configured., We use combined registration SSPR +MFA.

#Define global variable
$Results = New-Object System.Collections.ArrayList
# Get User list from a text file, expect user name as UserPricipalName
$Userlist = get-content d:\users.txt
Write-host "Total $(($Userlist).count) users"
#Checking each user Strong Authentication Method
$Userlist | foreach {
Write-host "Checking user: $($_) MFA status....."
$User = get-msoluser -UserPrincipalName $_
$UserStrongDetails = $User.StrongAuthenticationMethods
$UserStrongDetailsCount =$User.StrongAuthenticationMethods.count

If($UserStrongDetails){
For ($i=0; $i-lt $UserStrongDetailsCount; $i++) {if(($UserStrongDetails[$i].IsDefault) -eq $true) {
$DefaultMethod =$null
$DefaultMethod = $UserStrongDetails[$i].MethodType
break }
}

$Preresult =@{
'AAD-DisplayName' = $user.DisplayName
'AAD-UserPrincipalName' = $user.UserPrincipalName
'AAD-UsageLocation' = $user.UsageLocation
'AAD-MobilePhone' = $user.MobilePhone
'AAD-OfficePhoneNumber' = $user.PhoneNumber
'MFA-Mobile' = $user.StrongAuthenticationUserDetails.PhoneNumber
'MFA-AlternativePhoneNumber' = $user.StrongAuthenticationUserDetails.AlternativePhoneNumber
'MFA-Email' = $user.StrongAuthenticationUserDetails.Email
'MFA-DefaultMethod' = $DefaultMethod
}
}
else
{
$DefaultMethod =$null
$Preresult = @{
'AAD-DisplayName' = $user.DisplayName
'AAD-UserPrincipalName' = $user.UserPrincipalName
'AAD-UsageLocation' = $user.UsageLocation
'AAD-MobilePhone' = $user.MobilePhone
'AAD-OfficePhoneNumber' = $user.PhoneNumber
'MFA-Mobile' = "Not-Defined"
'MFA-AlternativePhoneNumber' = "Not-Defined"
'MFA-Email' = "Not-Defined"
'MFA-DefaultMethod' = "Not-Defined"
}

}

$Results += New-Object -TypeName PSObject -Property $Preresult
}

$Results | Select-Object AAD-DisplayName,AAD-UserPrincipalName,AAD-UsageLocation,AAD-MobilePhone,AAD-OfficePhoneNumber,MFA-Mobile,MFA-AlternativePhoneNumber,MFA-Email,MFA-DefaultMethod | Export-Csv -notypeinformation -Path "d:\AzureMFAUserDetails.csv"

_Sudhish Kumar

Dale Robertson 

Here is the script which does exactly what you need
https://docs.microsoft.com/en-us/samples/azure-samples/azure-mfa-authentication-method-analysis/azure-mfa-authentication-method-analysis/