diff --git a/core/core.php b/core/core.php
index c86121e..e062841 100644
--- a/core/core.php
+++ b/core/core.php
@@ -51,7 +51,7 @@ class common
 	const ACCESS_TIMER = 1800;
 
 	// Numéro de version
-	const ZWII_VERSION = '1.8.01';
+	const ZWII_VERSION = '1.9.00';
 
 	// URL autoupdate
 	const ZWII_UPDATE_URL = 'https://forge.chapril.org/ZwiiCMS-Team/campus-update/raw/branch/master/';
diff --git a/core/module/course/view/manage/manage.php b/core/module/course/view/manage/manage.php
index 7b1d066..3a910f8 100644
--- a/core/module/course/view/manage/manage.php
+++ b/core/module/course/view/manage/manage.php
@@ -48,7 +48,6 @@
     <?php endif; ?>
     <?php if ($this->getUser('permission', 'course', 'edit') === true): ?>
         <div class="col2">
-
             <?php echo template::button('courseManageEdit' . $this->getUrl(2), [
                 'href' => helper::baseUrl() . 'course/edit/' . $this->getUrl(2),
                 'value' => 'Éditer',
@@ -58,13 +57,11 @@
     <?php endif; ?>
     <?php if ($this->getUser('permission', 'course', 'users') === true): ?>
         <div class="col2">
-
             <?php echo template::button('categoryUser' . $this->getUrl(2), [
                 'href' => helper::baseUrl() . 'course/users/' . $this->getUrl(2),
                 'value' => 'Participants',
                 'ico' => 'users'
             ]); ?>
-
         </div>
     <?php endif; ?>
 </div>
diff --git a/core/module/user/user.php b/core/module/user/user.php
index fbcb9f7..0b12501 100644
--- a/core/module/user/user.php
+++ b/core/module/user/user.php
@@ -19,6 +19,7 @@ class user extends common
 	public static $actions = [
 		'add' => self::GROUP_ADMIN,
 		'delete' => self::GROUP_ADMIN,
+		'usersDelete' => self::GROUP_ADMIN,
 		'import' => self::GROUP_ADMIN,
 		'index' => self::GROUP_ADMIN,
 		'template' => self::GROUP_ADMIN,
@@ -229,6 +230,145 @@ class user extends common
 		}
 	}
 
+    /**
+     * Désinscription de tous les utilisateurs
+     * Les désinscriptions ne suppriment pas les historiques
+     */
+    public function usersDelete()
+    {
+
+        // Contenu sélectionné
+        $courseId = $this->getUrl(2);
+
+        // Accès limité aux admins, à l'auteur ou éditeurs inscrits
+        if (
+            $this->getUser('permission', __CLASS__, __FUNCTION__) !== true
+        ) {
+            // Valeurs en sortie
+            $this->addOutput([
+                'access' => false
+            ]);
+        }
+
+        // Inscription des utilisateurs cochés
+        if (
+            isset($_POST['usersDeleteSubmit'])
+        ) {
+            foreach ($_POST as $keyPost => $valuePost) {
+                // Exclure les variables post qui ne sont pas des userId et ne traiter que les non inscrits
+                if (
+                    $this->getData(['user', $keyPost]) !== null
+                    && $this->getData(['user', $keyPost]) !== null
+                ) {
+                    $this->deleteData(['user', $keyPost]);
+                }
+            }
+        }
+
+        // Liste des groupes et des profils
+        $usersGroups = $this->getData(['profil']);
+
+        foreach ($usersGroups as $groupId => $groupValue) {
+            switch ($groupId) {
+                case "-1":
+                case "0":
+                    break;
+                case "3":
+                    self::$usersGroups['30'] = 'Administrateur';
+                    $profils['30'] = 0;
+                    break;
+                case "1":
+                case "2":
+                    foreach ($groupValue as $profilId => $profilValue) {
+                        if ($profilId) {
+                            self::$usersGroups[$groupId . $profilId] = sprintf(helper::translate('Groupe %s - Profil %s'), self::$groupPublics[$groupId], $profilValue['name']);
+                            $profils[$groupId . $profilId] = 0;
+                        }
+                    }
+            }
+        }
+
+        // Liste alphabétique
+        self::$alphabet = range('A', 'Z');
+        $alphabet = range('A', 'Z');
+        self::$alphabet = array_combine($alphabet, self::$alphabet);
+        self::$alphabet = array_merge(['all' => 'Tout'], self::$alphabet);
+
+        // Liste des inscrits dans le contenu sélectionné.
+        $users = $this->getData(['user']);
+        if (is_array($users)) {
+            // Tri du tableau par défaut par $userId
+            ksort($users);
+            foreach ($users as $userId => $userValue) {
+
+                // Compte les rôles
+                if (isset($profils[$this->getData(['user', $userId, 'group']) . $this->getData(['user', $userId, 'profil'])])) {
+                    $profils[$this->getData(['user', $userId, 'group']) . $this->getData(['user', $userId, 'profil'])]++;
+                }
+
+                // Filtres
+                if (
+                    isset($_POST['usersFilterGroup'])
+                    || isset($_POST['usersFilterFirstName'])
+                    || isset($_POST['usersFilterLastName'])
+                ) {
+
+                    // Groupe et profils
+                    $group = (string) $this->getData(['user', $userId, 'group']);
+                    $profil = (string) $this->getData(['user', $userId, 'profil']);
+                    $firstName = $this->getData(['user', $userId, 'firstname']);
+                    $lastName = $this->getData(['user', $userId, 'lastname']);
+                    if (
+                        $this->getInput('usersFilterGroup', helper::FILTER_INT) > 0
+                        && $this->getInput('usersFilterGroup', helper::FILTER_STRING_SHORT) !== $group . $profil
+                    )
+                        continue;
+                    // Première lettre du prénom
+                    if (
+                        $this->getInput('usersFilterFirstName', helper::FILTER_STRING_SHORT) !== 'all'
+                        && $this->getInput('usersFilterFirstName', helper::FILTER_STRING_SHORT) !== strtoupper(substr($firstName, 0, 1))
+                    )
+                        continue;
+                    // Première lettre du nom
+                    if (
+                        $this->getInput('usersFilterLastName', helper::FILTER_STRING_SHORT) !== 'all'
+                        && $this->getInput('usersFilterLastName', helper::FILTER_STRING_SHORT) !== strtoupper(substr($lastName, 0, 1))
+                    )
+                        continue;
+                }
+
+                // Construction du tableau
+                self::$users[] = [
+                    template::checkbox($userId, true, '', ['class' => 'checkboxSelect']),
+                    $userId,
+                    $this->getData(['user', $userId, 'firstname']),
+                    $this->getData(['user', $userId, 'lastname']),
+                    $this->getData(['user', $userId, 'tags']),
+                ];
+
+            }
+        }
+
+        // Ajoute les effectifs aux profils du sélecteur
+        foreach (self::$usersGroups as $groupId => $groupValue) {
+            if ($groupId === 'all') {
+                self::$usersGroups['all'] = self::$usersGroups['all'] . ' (' . array_sum($profils) . ')';
+            } else {
+                self::$usersGroups[$groupId] = self::$usersGroups[$groupId] . ' (' . $profils[$groupId] . ')';
+            }
+        }
+
+        // Valeurs en sortie
+        $this->addOutput([
+            'title' => helper::translate('Désincription en masse'),
+            'view' => 'usersDelete',
+            'vendor' => [
+                'datatables'
+            ]
+        ]);
+    }
+
+
 	/**
 	 * Édition
 	 */
diff --git a/core/module/user/view/index/index.php b/core/module/user/view/index/index.php
index cf44cb4..b2acbd3 100644
--- a/core/module/user/view/index/index.php
+++ b/core/module/user/view/index/index.php
@@ -8,20 +8,28 @@
 	</div>
 	<div class="col1">
 		<?php /**echo template::button('userHelp', [
-			 'href' => 'https://doc.zwiicms.fr/gestion-des-utilisateurs',
-			 'target' => '_blank',
-			 'value' => template::ico('help'),
-			 'class' => 'buttonHelp',
-			 'help' => 'Consulter l\'aide en ligne'
-		 ]);*/?>
+			  'href' => 'https://doc.zwiicms.fr/gestion-des-utilisateurs',
+			  'target' => '_blank',
+			  'value' => template::ico('help'),
+			  'class' => 'buttonHelp',
+			  'help' => 'Consulter l\'aide en ligne'
+		  ]);*/ ?>
 	</div>
-	<div class="col1 offset7">
+	<div class="col1 offset6">
 		<?php echo template::button('userImport', [
 			'href' => helper::baseUrl() . 'user/import',
-			'value' => template::ico('upload'),
+			'value' => template::ico('users'),
 			'help' => 'Importer des utilisateurs en masse'
 		]); ?>
 	</div>
+	<div class="col1">
+	<?php echo template::button('userDeleteAll', [
+		'class' => 'userDeleteAll buttonRed',
+		'href' => helper::baseUrl() . 'user/usersDelete/' . $this->getUrl(2),
+		'value' => template::ico('users'),
+		'help' => 'Désinscrire en masse',
+	]) ?>
+	</div>
 	<div class="col1">
 		<?php echo template::button('userGroup', [
 			'href' => helper::baseUrl() . 'user/profil',
@@ -60,4 +68,4 @@
 	</div>
 </div>
 <?php echo template::formClose(); ?>
-<?php echo template::table([3, 2, 2, 2, 2, 1, 1], $module::$users, [ 'Nom', 'Groupe', 'Profil', 'Étiquettes', 'Date dernière vue', '', ''], ['id' => 'dataTables']); ?>
\ No newline at end of file
+<?php echo template::table([3, 2, 2, 2, 2, 1, 1], $module::$users, ['Nom', 'Groupe', 'Profil', 'Étiquettes', 'Date dernière vue', '', ''], ['id' => 'dataTables']); ?>
\ No newline at end of file
diff --git a/core/module/user/view/usersDelete/usersDelete.css b/core/module/user/view/usersDelete/usersDelete.css
new file mode 100644
index 0000000..0273197
--- /dev/null
+++ b/core/module/user/view/usersDelete/usersDelete.css
@@ -0,0 +1,26 @@
+/**
+ * This file is part of Zwii.
+ *
+ * For full copyright and license information, please see the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @author Rémi Jean <remi.jean@outlook.com>
+ * @copyright Copyright (C) 2008-2018, Rémi Jean
+ * @author Frédéric Tempez <frederic.tempez@outlook.com>
+ * @copyright Copyright (C) 2018-2024, Frédéric Tempez
+ * @license CC Attribution-NonCommercial-NoDerivatives 4.0 International
+ * @link http://zwiicms.fr/
+ */
+
+
+/** NE PAS EFFACER
+* admin.css
+*/
+
+#usersDeleteSubmit {
+    background-color: rgba(217, 95, 78, 1);
+}
+
+tr {
+    cursor: pointer;
+}
diff --git a/core/module/user/view/usersDelete/usersDelete.js.php b/core/module/user/view/usersDelete/usersDelete.js.php
new file mode 100644
index 0000000..2a5ce08
--- /dev/null
+++ b/core/module/user/view/usersDelete/usersDelete.js.php
@@ -0,0 +1,100 @@
+/**
+ * This file is part of Zwii.
+ * For full copyright and license information, please see the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @author Rémi Jean <remi.jean@outlook.com>
+ * @copyright Copyright (C) 2008-2018, Rémi Jean
+ * @author Frédéric Tempez <frederic.tempez@outlook.com>
+ * @copyright Copyright (C) 2018-2024, Frédéric Tempez
+ * @license CC Attribution-NonCommercial-NoDerivatives 4.0 International
+ * @link http://zwiicms.fr/
+ */
+
+$(document).ready((function () {
+
+    $('tr').click(function () {
+        // Cochez ou décochez la case à cocher dans cette ligne
+        $(this).find('input[type="checkbox"]').prop('checked', function (i, val) {
+            return !val; // Inverse l'état actuel de la case à cocher
+        });
+    });
+
+    $('#usersDeleteSelectAll').on('click', function () {
+        $('.checkboxSelect').prop('checked', true);
+        saveCheckboxState();
+    });
+    $('#usersDeleteSelectNone').on('click', function () {
+        $('.checkboxSelect').prop('checked', false);
+        saveCheckboxState();
+    });
+
+    $("#usersFilterGroup, #usersFilterFirstName, #usersFilterLastName").change(function () {
+        saveCheckboxState();
+        $("#usersDeleteForm").submit();
+    });
+
+    var table = $('#dataTables').DataTable({
+        language: {
+            url: "core/vendor/datatables/french.json"
+        },
+        locale: 'fr',
+        "columnDefs": [
+            {
+                target: 0,
+                orderable: false,
+                searchable: false,
+            }
+        ]
+    });
+
+    // Handle checkbox change event
+    $('.checkboxSelect').on('change', function () {
+        // Save checkbox state to cookies or local storage
+        saveCheckboxState();
+    });
+
+    // Handle checkbox state on DataTables draw event
+    table.on('draw', function () {
+        // Restore checkbox state from cookies or local storage
+        restoreCheckboxState();
+    });
+
+    // Empty local storage after submit
+    $("#usersDeleteSubmit").on("click", function () {
+        localStorage.setItem('checkboxState', JSON.stringify({}));
+    });
+
+    // Restore checkbox state on page load
+    restoreCheckboxState();
+
+    function saveCheckboxState() {
+
+        // Récupérer d'abord les données existantes dans le localStorage
+        var existingData = JSON.parse(localStorage.getItem('checkboxState')) || {};
+
+        // Ajouter ou mettre à jour les données actuelles
+        $('.checkboxSelect').each(function () {
+            var checkboxId = $(this).attr('id');
+            var checked = $(this).prop('checked');
+            existingData[checkboxId] = checked;
+        });
+
+        // Sauvegarder les données mises à jour dans le localStorage
+        localStorage.setItem('checkboxState', JSON.stringify(existingData));
+    }
+
+    // Function to restore checkbox state
+    function restoreCheckboxState() {
+        var checkboxState = JSON.parse(localStorage.getItem('checkboxState')) || {};
+        // console.log(checkboxState);
+        for (var checkboxId in checkboxState) {
+            if (checkboxState.hasOwnProperty(checkboxId)) {
+                var checked = checkboxState[checkboxId];
+                // Update checkbox state based on stored information
+                $('#' + checkboxId).prop('checked', checked);
+            }
+        }
+    }
+
+}));
\ No newline at end of file
diff --git a/core/module/user/view/usersDelete/usersDelete.php b/core/module/user/view/usersDelete/usersDelete.php
new file mode 100644
index 0000000..723a80e
--- /dev/null
+++ b/core/module/user/view/usersDelete/usersDelete.php
@@ -0,0 +1,55 @@
+<?php echo template::formOpen('usersDeleteForm'); ?>
+<div class="row">
+    <div class="col1">
+        <?php echo template::button('userDeleteBack', [
+            'class' => 'buttonGrey',
+            'href' => helper::baseUrl() . 'user/' . $this->getUrl(2),
+            'value' => template::ico('left')
+        ]); ?>
+    </div>
+    <div class="col1 offset8">
+        <?php echo template::button('usersDeleteSelectAll', [
+            'value' => template::ico('square-check'),
+            'help' => 'Tout sélectionner'
+        ]); ?>
+    </div>
+    <div class="col1">
+        <?php echo template::button('usersDeleteSelectNone', [
+            'value' => template::ico('square-check-empty'),
+            'help' => 'Tout désélectionner'
+        ]); ?>
+    </div>
+<div class="col1">
+        <?php echo template::submit('usersDeleteSubmit', [
+            'class' => 'buttonRed',
+            'ico' => '',
+            'value' => template::ico('minus'),
+        ]); ?>
+    </div>
+    </div>
+<div class="row" id="Bfrtip">
+    <div class="col3">
+        <?php echo template::select('usersFilterGroup', $module::$usersGroups, [
+            'label' => 'Groupes / Profils',
+            'selected' => isset($_POST['usersFilterGroup']) ? $_POST['usersFilterGroup'] : 'all',
+        ]); ?>
+    </div>
+    <div class="col3">
+        <?php echo template::select('usersFilterFirstName', $module::$alphabet, [
+            'label' => 'Prénom commence par',
+            'selected' => isset($_POST['usersFilterFirstName']) ? $_POST['usersFilterFirstName'] : 'all',
+        ]); ?>
+    </div>
+    <div class="col3">
+        <?php echo template::select('usersFilterLastName', $module::$alphabet, [
+            'label' => 'Nom commence par',
+            'selected' => isset($_POST['usersFilterLastName']) ? $_POST['usersFilterLastName'] : 'all',
+        ]); ?>
+    </div>
+</div>
+<?php if ($module::$users): ?>
+    <?php echo template::table([1, 2, 3, 3, 3], $module::$users, ['', 'Id',  'Prénom', 'Nom', 'Étiquettes'], ['id' => 'dataTables']); ?>
+<?php else: ?>
+    <?php echo template::speech('Aucun inscrit'); ?>
+<?php endif; ?>
+<?php echo template::formClose(); ?>
\ No newline at end of file