SharePoint 2010-Workflows werden möglicherweise durch eine erweiterte Sicherheitsrichtlinie blockiert (KB5020238)

<#
.SYNOPSIS
    Script to check character encoding of workflow .xoml files found in a site collection.
.DESCRIPTION
    This script checks the character encoding of workflow .xoml files found in a site collection based
    on the security improvement documented here: https://support.microsoft.com/topic/sharepoint-2010-workflows-might-be-blocked-by-enhanced-security-policy-kb5020238-eb91e24d-eea4-4490-a281-86503adc8b27
    
    This could be altered to take an SPWebApplication object, iterate through all SPSite objects in the Sites SPSiteCollection,
    and then iterate through all SPWeb subsites in the AllWebs SPWebCollection.

.EXAMPLE
    Get-WorkflowStatusForSite -SiteCollectionUrl https://sharepoint

.EXAMPLE
    Get-WorkflowStatusForSite -SiteCollectionUrl https://sharepoint -IgnoreSubSites
.INPUTS
    None
.OUTPUTS
    PSCustomObject with Site, Web, WorkflowFileName and IsGoodWorkflow Result

    Site                         Web                            WorkflowFileName       IsGoodWorkflow
    ----                         ---                            ----------------       --------------
    SPSite Url=http://sharepoint http://sharepoint/WorkflowTest 2010 Log Workflow.xoml           True
    SPSite Url=http://sharepoint http://sharepoint/WorkflowTest Another Test Log.xoml            True
.NOTES
    Version .1
#>
param(
    [Parameter(Position=2,HelpMessage="The site collection URL to validate.")]
    [string]$SiteCollectionUrl, 
    [Parameter(Position=3,HelpMessage="Ignore subsites below the top-level site in the site collection.")]
    [switch]$IgnoreSubSites
)

function IsGoodWorkflow
{
    param
    (
        [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)]
        [System.Xml.XmlReader]$xmlReader
    )

    try {
        $xDoc = [System.Xml.Linq.XDocument]::Load($xmlReader)

        if ($null -ne $xDoc -and $null -ne $xDoc.Declaration -and $null -ne $xDoc.Declaration.Encoding)
        {
            if ($xdoc.Declaration.Encoding.ToLower() -ne "utf-8")
            {
                return $false
            }
        }
    }
    catch
    {
        return $false
    }
        

    return $true
}

function CheckWorkflowFile
{
    param
    (
        [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)]
        [Microsoft.SharePoint.SPFile]$SPFile
    )

    $xmlReader = [System.Xml.XmlReader]::Create($SPFile.OpenBinaryStream())

    if ($null -ne $xmlReader)
    {
        $isGood = $xmlReader | IsGoodWorkflow

        $xmlReader.Close()
        $xmlReader.Dispose()
        
        return [PSCustomObject]@{
            Site = $SPFile.Item.Web.Site
            Web = $SPFile.Item.Web.Url
            WorkflowFileName = $SPFile.Name
            IsGoodWorkflow = $isGood
            }
    }
}

function CheckWorkflowsForWeb
{
    param
    (
        [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)]
        [Microsoft.SharePoint.SPWeb]$SPWeb
    )

    write-host "Checking $SPweb"
    $WorkflowsList = $SPWeb.Lists["Workflows"]

    $results = @()

    if ($WorkflowsList)
    {
        Write-Host "Found: " $WorkflowsList.Title

        foreach ($listItem in $WorkflowsList.Items)
        {
            if ($listItem.File -and $listItem.File.Name.ToLower().EndsWith(".xoml"))
            {
                Write-Host "Found Workflow: " $listItem.File.Name
                $results += (CheckWorkflowFile $listItem.File)
            }
        }
    }
    return $results
}

function CheckWorkflowsForSite
{
    param
    (
    [Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)]
    [Microsoft.SharePoint.SPSite]$SPSite,
    [switch]$IgnoreSubSites
    )
    
    $results = @()

    if ($IgnoreSubSites)
    {
        $SPWeb = $SPSite.RootWeb

        $results += CheckWorkflowsForWeb $SPWeb

        $SPWeb.Dispose()
    }
    else
    {
        foreach ($SPWeb in $SPSite.AllWebs)
        {
            $results += CheckWorkflowsForWeb $SPWeb
            $SPWeb.Dispose()
        }
    }
    
    return $results
}

if ([string]::IsNullOrEmpty($SiteCollectionUrl))
{
    $SiteCollectionUrl = Read-Host "Please provide a site collection URL (Default: http://sharepoint)"
    if ([String]::IsNullOrEmpty($SiteCollectionUrl))
    {
        $SiteCollectionUrl = "http://sharepoint"
    }
}

$SPSite = Get-SPSite $SiteCollectionUrl -ErrorAction SilentlyContinue

if ($null -eq $SPSite)
{
    Write-Host "Site collection $SiteCollectionUrl not found." -ForegroundColor Red
    return;
}

$results = CheckWorkflowsForSite $SPSite

# Dispose of the Site
$SPSite.Dispose()

# Results can be exported to a CSV or manipulated
$results