Connect-AzureAD

# Get group by name
$group = Get-AzureADGroup -SearchString 'My group'

# Get members
$members = Get-AzureADGroupMember -ObjectId $group.ObjectId -All:$true 

# Get password
$password = Read-host -AsSecureString -Prompt "Password"

$VerbosePreference = "Continue" 
$inc = 1
$members | Foreach {
    Write-Verbose "$($inc) / $($members.Count) - $($_.UserPrincipalName)"
    $inc += 1

    Set-AzureADUserPassword -ObjectId $_.ObjectId -ForceChangePasswordNextLogin:$true -Password $password
}

Connect-AzureAD
$expiresWithinDays = 31
$expired = Get-AzureADApplication -All:$true | ForEach-Object {
    $app = $_
    @(
        Get-AzureADApplicationPasswordCredential -ObjectId $_.ObjectId
        Get-AzureADApplicationKeyCredential -ObjectId $_.ObjectId
    ) | Where-Object {
        $_.EndDate -lt (Get-Date).AddDays($expiresWithinDays)
    } | ForEach-Object {
        $id = "Not set"
        if($_.CustomKeyIdentifier) {
            $id = [System.Text.Encoding]::UTF8.GetString($_.CustomKeyIdentifier)
        }
        [PSCustomObject] @{
            App = $app.DisplayName
            ObjectID = $app.ObjectId
            AppId = $app.AppId
            Type = $_.GetType().name
            KeyIdentifier = $id
            EndDate = $_.EndDate
        }
    }
}

$expired | Out-GridView