diff --git a/src/hooks/useFeatureAccess.ts b/src/hooks/useFeatureAccess.ts
index 9ac69d7..439936c 100644
--- a/src/hooks/useFeatureAccess.ts
+++ b/src/hooks/useFeatureAccess.ts
@@ -420,20 +420,23 @@ export function useFeatureAccess() {
   }, []);
 
   /**
-   * Update a user's roles in a feature instance
+   * Update a user's roles and active flag in a feature instance
    */
   const updateInstanceUserRoles = useCallback(async (
     mandateId: string,
     instanceId: string,
     userId: string,
-    roleIds: string[]
+    payload: { roleIds: string[]; enabled?: boolean }
   ): Promise<{ success: boolean; data?: any; error?: string }> => {
     setLoading(true);
     setError(null);
     try {
+      const body = payload.enabled !== undefined
+        ? { roleIds: payload.roleIds, enabled: payload.enabled }
+        : { roleIds: payload.roleIds };
       const response = await api.put(
         `/api/features/instances/${instanceId}/users/${userId}/roles`,
-        roleIds,
+        body,
         {
           headers: {
             'X-Mandate-Id': mandateId
diff --git a/src/pages/admin/AdminFeatureInstanceUsersPage.tsx b/src/pages/admin/AdminFeatureInstanceUsersPage.tsx
index 34637cd..f33d4c1 100644
--- a/src/pages/admin/AdminFeatureInstanceUsersPage.tsx
+++ b/src/pages/admin/AdminFeatureInstanceUsersPage.tsx
@@ -275,15 +275,23 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
     ];
   }, [userOptions, roleOptions]);
 
-  // Form attributes for editing user roles
+  // Form attributes for editing user roles and active flag
   const editRolesFields: AttributeDefinition[] = useMemo(() => {
-    return [{
-      name: 'roleIds',
-      label: 'Rollen',
-      type: 'multiselect' as const,
-      required: true,
-      options: roleOptions,
-    }];
+    return [
+      {
+        name: 'roleIds',
+        label: 'Rollen',
+        type: 'multiselect' as const,
+        required: true,
+        options: roleOptions,
+      },
+      {
+        name: 'enabled',
+        label: 'Aktiv',
+        type: 'checkbox' as const,
+        required: false,
+      },
+    ];
   }, [roleOptions]);
 
   // Handle add user submit
@@ -304,8 +312,8 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
     }
   };
 
-  // Handle edit roles submit
-  const handleEditRoles = async (data: { roleIds: string[] }) => {
+  // Handle edit roles and active submit
+  const handleEditRoles = async (data: { roleIds: string[]; enabled?: boolean }) => {
     if (!selectedMandateId || !selectedInstanceId || !editingUser) return;
     setIsSubmitting(true);
     try {
@@ -313,14 +321,14 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
         selectedMandateId,
         selectedInstanceId,
         editingUser.userId,
-        data.roleIds
+        { roleIds: data.roleIds, enabled: data.enabled }
       );
       if (result.success) {
         setEditingUser(null);
         refreshUsers();
-        showSuccess('Rollen aktualisiert', 'Die Benutzerrollen wurden erfolgreich aktualisiert.');
+        showSuccess('Eintrag aktualisiert', 'Rollen und Aktiv-Status wurden erfolgreich aktualisiert.');
       } else {
-        showError('Fehler', result.error || 'Fehler beim Aktualisieren der Rollen');
+        showError('Fehler', result.error || 'Fehler beim Aktualisieren');
       }
     } finally {
       setIsSubmitting(false);
@@ -606,7 +614,7 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
             <div className={styles.modalContent}>
               <FormGeneratorForm
                 attributes={editRolesFields}
-                data={{ roleIds: editingUser.roleIds }}
+                data={{ roleIds: editingUser.roleIds, enabled: editingUser.enabled }}
                 mode="edit"
                 onSubmit={handleEditRoles}
                 onCancel={() => setEditingUser(null)}