Blog Force renewal of Content Types

ForceRenewalOfCT.ps1

param
(
    [Parameter(Mandatory=$true)]
    [string]$siteurl,
    [Parameter(Mandatory=$false)]
    [bool]$OnlyThisSite
)


Function RemoveAllTimeStamps([Microsoft.SharePoint.SPSite] $site)
{
    if ($site -eq $null) { return }
    $rootWeb = $site.RootWeb
    if ($rootWeb.Properties.ContainsKey("MetadataTimeStamp"))
    {
        $rootWeb.Properties["MetadataTimeStamp"] = [string]::Empty
        $rootWeb.Properties.Update()
    }
}

$Host.UI.RawUI.WindowTitle = "Set Renewal for content types"

if($onlyThisSite)
{
    $site = Get-SPSite $siteurl
    RemoveAllTimeStamps $site
    $site.Dispose()
}
else
{
    $webApp = Get-spWebApplication $siteurl
    $total = $webApp.Sites.Count
    $counter = 0
    $webApp.Sites | % {
        $site = $_
        $Host.UI.RawUI.WindowTitle = "Set Renewal for content types     $counter / $total"
        RemoveAllTimeStamps $site
        $site.Dispose()
        $counter++
    }
}