Get App Expiry Dates using Powershell

Step 1:
Connect-MsolService

Step 2:
$applist = Get-MsolServicePrincipal -all  |Where-Object -FilterScript { ($_.DisplayName -notlike "*Microsoft*") -and ($_.DisplayName -notlike "autohost*") -and  ($_.ServicePrincipalNames -notlike "*localhost*") }

Step 3:
foreach ($appentry in $applist) {
    $principalId = $appentry.AppPrincipalId
    $principalName = $appentry.DisplayName

    Get-MsolServicePrincipalCredential -AppPrincipalId $principalId -ReturnKeyValues $false | ? { $_.Type -eq "Password" } | % { "$principalName;$principalId;" + $_.KeyId.ToString() +";" + $_.StartDate.ToString() + ";" + $_.EndDate.ToString() } | out-file -FilePath d:\appsec.txt -append
}