Mention that blob storage accounts must be created without IP range allowlisting

Author: FlorianBorn71

articles/remote-rendering/how-tos/conversion/blob-storage.md

@@ -54,6 +54,11 @@ A SAS URI can be generated using one of:
 
 An example of using Shared Access Signatures in asset conversion is shown in Conversion.ps1 of the [PowerShell Example Scripts](../../samples/powershell-example-scripts.md#script-conversionps1).
 
+> [!IMPORTANT]
+> When configuring the storage account, do **not** specify an allowed IP address range, even when it allow-lists all IP addresses:
+> ![Screenshot of blob storage settings in Azure portal that show how to configure an allowed IP address range.](./media/blob-storage-ip-allowlist.png)
+> With any IP range being specified, the SAS token may not work with ARR and model loading fails.
+
 ## Upload an input model
 
 To start converting a model, you need to upload it, using one of the following options: