diff --git a/front/login.php b/front/login.php
index 3d00ea91423..14170ce44ac 100644
--- a/front/login.php
+++ b/front/login.php
@@ -90,7 +90,7 @@
     Auth::redirectIfAuthenticated();
 } else {
     TemplateRenderer::getInstance()->display('pages/login_error.html.twig', [
-        'error'     => $auth->getErr(),
+        'errors'    => $auth->getErrors(),
         'login_url' => $CFG_GLPI["root_doc"] . '/front/logout.php?noAUTO=1' . str_replace("?", "&", $REDIRECT),
     ]);
     exit();
diff --git a/src/Api/API.php b/src/Api/API.php
index 6a902d674ad..e2d6f5566dc 100644
--- a/src/Api/API.php
+++ b/src/Api/API.php
@@ -299,7 +299,7 @@ protected function initSession($params = [])
 
        // login on glpi
         if (!$auth->login($params['login'], $params['password'], $noAuto, false, $params['auth'])) {
-            $err = Toolbox::stripTags($auth->getErr());
+            $err = implode(' ', $auth->getErrors());
             if (
                 isset($params['user_token'])
                 && !empty($params['user_token'])
diff --git a/src/Auth.php b/src/Auth.php
index 3ac7e9b14fa..1ebcfcfebf4 100644
--- a/src/Auth.php
+++ b/src/Auth.php
@@ -649,6 +649,8 @@ public function getAlternateAuthSystemsUserLogin($authtype = 0)
      * Get the current identification error
      *
      * @return string current identification error
+     *
+     * @TODO Deprecate this in GLPI 10.1.
      */
     public function getErr()
     {
diff --git a/templates/pages/login_error.html.twig b/templates/pages/login_error.html.twig
index a750a9ec6b9..24601b15e99 100644
--- a/templates/pages/login_error.html.twig
+++ b/templates/pages/login_error.html.twig
@@ -44,7 +44,9 @@
                 {{ __("Error") }}
             </h4>
             <div>
-                {{ error }}
+                {% for error in errors %}
+                    {{ error }}<br />
+                {% endfor %}
             </div>
 
             <a href="{{ login_url }}" class="btn btn-primary mt-3">