diff --git a/conf/nginx-code-error.conf b/conf/nginx-code-error.conf
new file mode 100644
index 0000000..5ded6cc
--- /dev/null
+++ b/conf/nginx-code-error.conf
@@ -0,0 +1,7 @@
+# Build error access
+error_page 403 __PATH__/error/403.html;
+error_page 404 __PATH__/error/404.html;
+
+location ^~ __PATH__/error/ {
+    internal;
+}
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 9f696ae..e522e75 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -6,7 +6,7 @@ location __PATH__/ {
 
     # Default indexes and catch-all
     index index.html index.php;
-    try_files $uri $uri/ __PATH__/index.php?$args;
+    try_files $uri $uri/ __PATH__/index.php?$args =404;
 
     # Prevent useless logs
     location = __PATH__/favicon.ico {
diff --git a/config_panel.toml b/config_panel.toml
index b229f0f..dfe5e24 100644
--- a/config_panel.toml
+++ b/config_panel.toml
@@ -18,6 +18,15 @@ name = "My Webapp configuration"
         visible = "with_sftp"
         help = "If a password already exist, leave blank and it will not be replaced."
 
+    [main.code_error]
+    name = "Html Custom error"
+
+        [main.code_error.custom_error_file]
+        ask = "Activate the custom error file use"
+        type = "boolean"
+        default = false
+        help = "Once custom error enabled, you can add/create a custom `404.html` file in a directory `www\\error`."
+
     [main.php_fpm_config]
     name = "PHP-FPM configuration"
 
diff --git a/doc/ADMIN.md b/doc/ADMIN.md
index 454a9bb..586e310 100644
--- a/doc/ADMIN.md
+++ b/doc/ADMIN.md
@@ -26,6 +26,10 @@ The `php` command will point to the PHP version installed for the app.
 
 Once logged in, under the Web directory you will see a `www` folder which contains the public files served by this app. You can put all the files of your custom Web application inside.
 
+### 403 and 404 error handling
+
+The web server configuration supports http error handling `403` and `404` (access denied and resource not found). Create an `error` folder at `__INSTALL_DIR__/www/error`, and put your `403.html` and `404.html` files in there.
+
 ### Customizing the nginx configuration
 
 If you want to add tweak the nginx configuration for this app, it is recommended to edit `/etc/nginx/conf.d/__DOMAIN__.d/__ID__.d/WHATEVER_NAME.conf` (ensure that the file has the `.conf` extension) and reload the nginx after making sure that the configuration is valid using `nginx -t`.
diff --git a/doc/ADMIN_fr.md b/doc/ADMIN_fr.md
index 3f3b568..a9c0371 100644
--- a/doc/ADMIN_fr.md
+++ b/doc/ADMIN_fr.md
@@ -26,6 +26,10 @@ La commande `php` pointera vers la version de PHP installée pour l'app.
 
 Après vous être connecté, sous le répertoire Web vous verrez un dossier `www` qui contient les fichiers publics servis par cette application. Vous pouvez mettre tous les fichiers de votre application Web personnalisée à l'intérieur.
 
+### Gestion des erreurs 403 et 404
+
+La configuration du serveur web prend en charge la gestion des erreurs http `403` et `404` (accès refusé et ressource non trouvée). Ajoutez un dossier `error` à l'emplacement `__INSTALL_DIR__/www/error`, puis ajoutez-y vos fichiers `403.html` et `404.html`.
+
 ### Personnaliser la configuration nginx
 
 Si vous souhaitez ajuster la configuration nginx pour cette app, il est recommandé d'éditer `/etc/nginx/conf.d/__DOMAIN__.d/__ID__.d/WHATEVER_NAME.conf` (assurez-vous que le fichier a l'extension `.conf`) puis rechargez nginx après vous être assuré que la configuration est valide à l'aide de `nginx -t`.
diff --git a/doc/DESCRIPTION.md b/doc/DESCRIPTION.md
index 0df591d..f00f770 100644
--- a/doc/DESCRIPTION.md
+++ b/doc/DESCRIPTION.md
@@ -5,3 +5,5 @@ It can also create a MySQL or PostgreSQL database - which will be backed up and
 PHP-FPM version can also be selected among `none`, `7.4`, `8.0`, `8.1` and `8.2`.
 
 **Once installed, go to the chosen URL to know the user, domain and port you will have to use for the SFTP access.** The password is one you chosen during the installation. Under the Web directory, you will see a `www` folder which contains the public files served by this app. You can put all the files of your custom Web application inside.
+
+You can also customize 404 errors - if you enable the option in the config panel. Simply create an`error` folder in the `www` root directory, containing your custom `html` files. 
\ No newline at end of file
diff --git a/doc/DESCRIPTION_fr.md b/doc/DESCRIPTION_fr.md
index 0ad9a17..b277384 100644
--- a/doc/DESCRIPTION_fr.md
+++ b/doc/DESCRIPTION_fr.md
@@ -5,3 +5,5 @@ Elle peut également créer une base de données MySQL ou PostgreSQL - qui sera
 La version de PHP-FPM peut aussi être choisie, parmi `none`, `7.4`, `8.0`, `8.1` et `8.2`.
 
 **Une fois installé, rendez-vous sur l'URL choisie pour connaître l'utilisateur, le domaine et le port que vous devrez utiliser pour l'accès SFTP.** Le mot de passe est celui que vous avez choisi lors de l'installation. Sous le répertoire Web, vous verrez un dossier `www` qui contient les fichiers publics servis par cette application. Vous pouvez mettre tous les fichiers de votre application Web personnalisée à l'intérieur.
+
+L'application vous permet aussi de gérer - si vous activez l'option dans le panneau de configuration - la gestion des erreurs 404, il vous suffit de créer un dossier `error` dans le répertoire racine `www` et d'y placer vos fichiers d'erreur `html` 
\ No newline at end of file
diff --git a/scripts/backup b/scripts/backup
index 4e0ff8c..83dbbd0 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -36,6 +36,15 @@ then
     ynh_backup --src_path="/etc/php/${phpversion}/fpm/pool.d/$app.conf"
 fi
 
+#=================================================
+# BACKUP CUSTOM CONF
+#=================================================
+
+if [ $custom_error_file ]
+then
+    ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.d/error-code.conf"
+fi
+
 #=================================================
 # BACKUP THE MYSQL DATABASE
 #=================================================
diff --git a/scripts/change_url b/scripts/change_url
index 4433872..d6a18d1 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -44,6 +44,7 @@ nginx_extra_conf_dir=/etc/nginx/conf.d/$old_domain.d/$app.d
 
 # Change the path in the NGINX config file
 if [ $change_path -eq 1 ]
+ynh_print_info --message="Change the path in the Nginx config file"
 then
 	# Make a backup of the original NGINX config file if modified
 	ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
@@ -52,7 +53,14 @@ then
 	domain="$old_domain"
 	path_url="$new_path"
 
-	# Create a dedicated NGINX config
+	# Update custom error file path if needed
+	if [ $custom_error_file ]
+	ynh_print_info --message="Change the custom error config file"
+	then
+		ynh_add_config --template="nginx-code-error.conf" --destination="$nginx_extra_conf_dir/error-code.conf"
+	fi
+
+	# Create a dedicated NGINX configssh
 	ynh_add_nginx_config
 fi
 
@@ -62,6 +70,7 @@ then
 	# Delete file checksum for the old conf file location
 	ynh_delete_file_checksum --file="$nginx_conf_path"
 	ynh_delete_file_checksum --file="$nginx_extra_conf_dir/php.conf"
+	#ynh_delete_file_checksum --file="$nginx_extra_conf_dir/nginx-code-error.conf"
 
 	path_url="$new_path"
 	domain="$old_domain"
@@ -74,6 +83,7 @@ then
 
 	# Store file checksum for the new config file location
 	ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.d/php.conf"
+	#ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.d/nginx-code-error.conf"
 fi
 
 #=================================================
diff --git a/scripts/config b/scripts/config
index 21b6f17..0958338 100644
--- a/scripts/config
+++ b/scripts/config
@@ -148,10 +148,26 @@ ynh_app_config_apply() {
         ynh_system_user_del_group --username=$app --groups="sftp.app"
     fi
 
+    if [ "${changed[custom_error_file]}" == "true" ]
+    then
+      CUSTOM_ERROR_FILE=$custom_error_file
+      nginx_extra_conf_dir="/etc/nginx/conf.d/$domain.d/$app.d"
+
+      if [ $custom_error_file -eq 1 ]
+      then
+        ynh_add_config --template="nginx-code-error.conf" --destination="$nginx_extra_conf_dir/error-code.conf"
+      elif [ $custom_error_file -eq 0 ]
+      then
+        ynh_secure_remove --file="$nginx_extra_conf_dir/error-code.conf"
+      fi
+      ynh_systemd_action --service_name=nginx --action=reload
+    fi
+
     if [ "$phpversion" != "none" ]
     then
         ynh_add_fpm_config --phpversion=$phpversion --usage=$fpm_usage --footprint=$fpm_footprint
     fi
+
 }
 
 ynh_app_config_run $1
diff --git a/scripts/install b/scripts/install
index 9ef3cba..836605b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -67,6 +67,11 @@ then
     YNH_PHP_VERSION="$phpversion"
 fi
 
+# Add the custom error build with the application
+ynh_add_config --template="nginx-code-error.conf" --destination="$nginx_extra_conf_dir/error-code.conf"
+ynh_app_setting_set --app=$app --key=custom_error_file --value="true"
+
+
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 ynh_add_config --template="example-custom-nginx-config.conf" --destination="$nginx_extra_conf_dir/sample.conf"
diff --git a/scripts/upgrade b/scripts/upgrade
index ef64b1e..31f947a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -68,6 +68,12 @@ if [ -z "$phpversion" ]; then
 	ynh_app_setting_set --app=$app --key=phpversion --value=$phpversion
 fi
 
+# If custom_error_file doesn't exist, create it.
+if [ -z "${custom_error_file:-}" ]; then
+	custom_error_file=1
+	ynh_app_setting_set --app=$app --key=custom_error_file --value=$custom_error_file
+fi
+
 # Delete old user
 if [ -n "$(ynh_app_setting_get --app=$app --key=user)" ]
 then
@@ -102,6 +108,12 @@ then
     YNH_PHP_VERSION="$phpversion"
 fi
 
+# Add the config error code
+if [ $custom_error_file -eq 1 ]
+then
+    ynh_add_config --template="nginx-code-error.conf" --destination="$nginx_extra_conf_dir/error-code.conf"
+fi
+
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 ynh_add_config --template="example-custom-nginx-config.conf" --destination="$nginx_extra_conf_dir/sample.conf"