401 (unauthorized) on internal media

If you upgrade ImageVault Core to version 4.5.10 or later but still are using clients (ImageVault UI, Episerver add-on/plug-in or any other ImageVault.Client) you can get unauthorized (401) responses when trying to access media from ImageVault.

This is due to a configuration change that only accepts authenticated requests for internal media in core.

To fix this, upgrade the client (ImageVault.Client) to version 4.5.10 or later or disable the check on the core service using the DisableAuthenticationCheckOnInternalMedia appSetting.