Blocking external iframe embedding via powershell

Question

Hello,

I am trying to write a script that automatically changes the html field security settings to block external iframe embedding.

I've googled some guides and tried the attached code. But as you can see it keeps erroring out. Any ideas on how to fix it?

Answer 1

For anyone else who has this problem I figured out the solution was due to different .dll's used for sharepoint vs sharepoint online.

Working code for sharepoint online is:

$SiteURL = "Your URL Here"
Connect-PnPOnline -Url $SiteURL -UseWebLogin
$Site = Get-PnPSite -Includes CustomScriptSafeDomains

This allows for any domain

$site.AllowExternalEmbeddingWrapper = [Microsoft.SharePoint.Client.ScriptSafeExternalEmbedding]::AllowedDomains;

This blocks any domain

$site.AllowExternalEmbeddingWrapper = [Microsoft.SharePoint.Client.ScriptSafeExternalEmbedding]::None;

Answer 2

I don't have SharePoint, but it looks like you need to use the Add-Type cmdlet to load the Microsoft.Sharepoint assembly.