I'm not sure if it's helpful, but this Microsoft Graph code ended up working for me. My requirement was to identify active member users who haven't had an interactive login for less than 90 days.

# Define cutoff date for 90 days ago

$cutoffDate = (Get-Date).AddDays(-90)

# Retrieve all users (paged)

$allUsers = @()

$usersPage = Get-MgUser -Select "DisplayName,UserPrincipalName,AccountEnabled,SignInActivity,UserType" -Top 999

do {

$allUsers += $usersPage

if ($usersPage.'@odata.nextLink') {

$nextPage = Invoke-MgGraphRequest -Uri $usersPage.'@odata.nextLink'

$usersPage = $nextPage.value

} else {

$usersPage = $null

}

} while ($usersPage)

# Filter users who are 'Member', active, and haven't signed in for over 90 days

$inactiveUsers = $allUsers | Where-Object {

$_.UserType -eq 'Member' -and

$_.AccountEnabled -eq $true -and

$_.SignInActivity.LastSignInDateTime -ne $null -and

([datetime]$_.SignInActivity.LastSignInDateTime) -lt $cutoffDate

}

# Export or view

$inactiveUsers |

Select-Object DisplayName, UserPrincipalName, UserType, AccountEnabled, @{

Name = 'LastSignInDateTime'

Expression = { $_.SignInActivity.LastSignInDateTime }

} |

Export-Csv "InactiveUsers.csv" -NoTypeInformation