diff --git a/src/Umbraco.Web/PropertyEditors/ParameterEditors/MultipleMediaPickerParameterEditor.cs b/src/Umbraco.Web/PropertyEditors/ParameterEditors/MultipleMediaPickerParameterEditor.cs
index 1208a5eecc33..350480144bf6 100644
--- a/src/Umbraco.Web/PropertyEditors/ParameterEditors/MultipleMediaPickerParameterEditor.cs
+++ b/src/Umbraco.Web/PropertyEditors/ParameterEditors/MultipleMediaPickerParameterEditor.cs
@@ -22,6 +22,7 @@ public MultipleMediaPickerParameterEditor(ILogger logger)
             : base(logger)
         {
             DefaultConfiguration.Add("multiPicker", "1");
+            DefaultConfiguration.Add("idType", "udi");
         }
     }
 }
diff --git a/src/Umbraco.Web/UmbracoHelper.cs b/src/Umbraco.Web/UmbracoHelper.cs
index 1bc8df5b24b1..9f15145ba039 100644
--- a/src/Umbraco.Web/UmbracoHelper.cs
+++ b/src/Umbraco.Web/UmbracoHelper.cs
@@ -573,6 +573,16 @@ internal static bool ConvertIdObjectToGuid(object id, out Guid guidId)
             switch (id)
             {
                 case string s:
+                    //could be a Udi string and not a pure Guid
+                    if (Udi.TryParse(s, out Udi udi))
+                    {
+                        var guidUdi = udi as GuidUdi;
+                        if (guidUdi != null)
+                        {
+                            guidId = guidUdi.Guid;
+                            return true;
+                        }
+                    }               
                     return Guid.TryParse(s, out guidId);
 
                 case Guid g: