Clarify the trusted_domain error page

Backport of https://github.com/owncloud/core/pull/8372

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/base.php b/lib/base.php
index a17cf19099b..c20812aa19b 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -652,7 +652,7 @@ class OC {
 			header('Status: 400 Bad Request');
 			OC_Template::printErrorPage(
 				'You are accessing the server from an untrusted domain.',
-				'Please contact your administrator'
+				'Please contact your administrator. If you are an administrator of this instance, configure the "trusted_domain" setting in config/config.php. An example configuration is provided in config/config.sample.php.'
 			);
 			return;
 		}