Renew an expiring client secret in a SharePoint Provider Hosted Apps (Add-in) without deploying the Apps again by changing Client Secret key using Powershell

Why?

      1.Use online power shell to create new Client Secret ID

Get-MsolServicePrincipal  |Where-Object -FilterScript { ($_.DisplayName -notlike “*Microsoft*”) -and ($_.DisplayName -notlike “autohost*”) -and  ($_.ServicePrincipalNames -notlike “*localhost*”) } | foreach-object{
    $principalId = $_.AppPrincipalId
    $principalName = $_.DisplayName

Get-MsolServicePrincipalCredential -AppPrincipalId $principalId -ReturnKeyValues $true | Where-Object { ($_.Type -ne “Other”) -and ($_.Type -ne “Asymmetric”) } |  foreach-object{
        $date = $_.EndDate.ToShortDateString()
        write-output “$($principalName);$($principalId);$($_.KeyId);$($_.type);$($date);$($_.Usage);$($_.Value)”
    }
} > c:tempappsec.txt

$clientId = ‘SPECIFY YOUR CLIENT ID HERE’
$bytes = New-Object Byte[] 32
$rand = [System.Security.Cryptography.RandomNumberGenerator]::Create()
$rand.GetBytes($bytes)
$newClientSecret = [System.Convert]::ToBase64String($bytes)
New-MsolServicePrincipalCredential -AppPrincipalId $clientId -Type Password -Usage Verify -Value $newClientSecret
New-MsolServicePrincipalCredential -AppPrincipalId $clientId -Type Symmetric -Usage Sign -Value $newClientSecret
New-MsolServicePrincipalCredential -AppPrincipalId $clientId -Type Symmetric -Usage Verify -Value $newClientSecret
$newClientSecret