diff --git a/htdocs/core/login/functions_dolibarr.php b/htdocs/core/login/functions_dolibarr.php
index 292ce1b44f5..610072aa35a 100644
--- a/htdocs/core/login/functions_dolibarr.php
+++ b/htdocs/core/login/functions_dolibarr.php
@@ -143,7 +143,11 @@ function check_user_password_dolibarr($usertotest, $passwordtotest, $entitytotes
 						$ret = $mc->checkRight($obj->rowid, $entitytotest);
 						if ($ret < 0) {
 							dol_syslog("functions_dolibarr::check_user_password_dolibarr Authentication KO entity '".$entitytotest."' not allowed for user '".$obj->rowid."'", LOG_NOTICE);
+
 							$login = ''; // force authentication failure
+							if ($mc->db->lasterror()) {
+								$_SESSION["dol_loginmesg"] = $mc->db->lasterror();
+							}
 						}
 					}
 				}
diff --git a/htdocs/install/mysql/migration/15.0.0-16.0.0.sql b/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
index 634e17b33b4..3aa5cd9c9cd 100644
--- a/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
+++ b/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
@@ -288,9 +288,16 @@ ALTER TABLE llx_bank_account ADD COLUMN pti_in_ctti smallint DEFAULT 0 AFTER dom
 -- Set default ticket type to OTHER if no default exists
 UPDATE llx_c_ticket_type SET use_default=1 WHERE code='OTHER' AND NOT EXISTS(SELECT * FROM (SELECT * FROM llx_c_ticket_type) AS t WHERE use_default=1);
 
-ALTER TABLE llx_user ADD COLUMN ref_employee varchar(50) DEFAULT NULL;
+
+ALTER TABLE llx_user DROP COLUMN webcal_login;
+ALTER TABLE llx_user DROP COLUMN module_comm;
+ALTER TABLE llx_user DROP COLUMN module_compta;
+ALTER TABLE llx_user DROP COLUMN ref_int;
+
+ALTER TABLE llx_user ADD COLUMN ref_employee varchar(50) DEFAULT NULL AFTER entity;
 ALTER TABLE llx_user ADD COLUMN national_registration_number varchar(50) DEFAULT NULL;
 
+
 ALTER TABLE llx_propal ADD last_main_doc VARCHAR(255) NULL AFTER model_pdf;
 
 UPDATE llx_c_country SET eec=0 WHERE eec IS NULL;
diff --git a/htdocs/install/mysql/tables/llx_user.sql b/htdocs/install/mysql/tables/llx_user.sql
index 694ed360b21..ae3715eb028 100644
--- a/htdocs/install/mysql/tables/llx_user.sql
+++ b/htdocs/install/mysql/tables/llx_user.sql
@@ -22,8 +22,8 @@ create table llx_user
   rowid             integer AUTO_INCREMENT PRIMARY KEY,
   entity            integer DEFAULT 1 NOT NULL, -- multi company id
 
+  ref_employee      varchar(50),
   ref_ext			varchar(50),				-- reference into an external system (not used by dolibarr)
-  ref_int			varchar(50),				-- reference into an internal system (deprecated)
 
   admin             smallint DEFAULT 0,			-- user has admin profile
 
@@ -108,7 +108,6 @@ create table llx_user
   import_key        varchar(14),				-- import key
   default_range     integer,
   default_c_exp_tax_cat     integer,
-  employee_number   varchar(50),
   national_registration_number  varchar(50),
   fk_warehouse      integer						-- default warehouse os user
 )ENGINE=innodb;
diff --git a/htdocs/install/repair.php b/htdocs/install/repair.php
index 8e4cc851d28..802711f4ff3 100644
--- a/htdocs/install/repair.php
+++ b/htdocs/install/repair.php
@@ -94,8 +94,8 @@ print 'Option repair_link_dispatch_lines_supplier_order_lines, (\'test\' or \'co
 // Init data
 print 'Option set_empty_time_spent_amount (\'test\' or \'confirmed\') is '.(GETPOST('set_empty_time_spent_amount', 'alpha') ?GETPOST('set_empty_time_spent_amount', 'alpha') : 'undefined').'<br>'."\n";
 // Structure
-print 'Option force_utf8_on_tables, for mysql/mariadb only (\'test\' or \'confirmed\') is '.(GETPOST('force_utf8_on_tables', 'alpha') ?GETPOST('force_utf8_on_tables', 'alpha') : 'undefined').'<br>'."\n";
-print "Option force_utf8mb4_on_tables (EXPERIMENTAL!), for mysql/mariadb only ('test' or 'confirmed') is ".(GETPOST('force_utf8mb4_on_tables', 'alpha') ? GETPOST('force_utf8mb4_on_tables', 'alpha') : 'undefined')."<br>\n";
+print 'Option force_utf8_on_tables (force utf8 + row=dynamic), for mysql/mariadb only (\'test\' or \'confirmed\') is '.(GETPOST('force_utf8_on_tables', 'alpha') ?GETPOST('force_utf8_on_tables', 'alpha') : 'undefined').'<br>'."\n";
+print "Option force_utf8mb4_on_tables (force utf8mb4 + row=dynamic, EXPERIMENTAL!), for mysql/mariadb only ('test' or 'confirmed') is ".(GETPOST('force_utf8mb4_on_tables', 'alpha') ? GETPOST('force_utf8mb4_on_tables', 'alpha') : 'undefined')."<br>\n";
 // Rebuild sequence
 print 'Option rebuild_sequences, for postgresql only (\'test\' or \'confirmed\') is '.(GETPOST('rebuild_sequences', 'alpha') ?GETPOST('rebuild_sequences', 'alpha') : 'undefined').'<br>'."\n";
 print '<br>';
@@ -176,7 +176,8 @@ $oneoptionset = 0;
 $oneoptionset = (GETPOST('standard', 'alpha') || GETPOST('restore_thirdparties_logos', 'alpha') || GETPOST('clean_linked_elements', 'alpha') || GETPOST('clean_menus', 'alpha')
 	|| GETPOST('clean_orphelin_dir', 'alpha') || GETPOST('clean_product_stock_batch', 'alpha') || GETPOST('set_empty_time_spent_amount', 'alpha') || GETPOST('rebuild_product_thumbs', 'alpha')
 	|| GETPOST('clean_perm_table', 'alpha')
-	|| GETPOST('force_disable_of_modules_not_found', 'alpha') || GETPOST('force_utf8_on_tables', 'alpha')
+	|| GETPOST('force_disable_of_modules_not_found', 'alpha')
+	|| GETPOST('force_utf8_on_tables', 'alpha') || GETPOST('force_utf8mb4_on_tables', 'alpha')
 	|| GETPOST('rebuild_sequences', 'alpha'));
 
 if ($ok && $oneoptionset) {
@@ -1218,7 +1219,7 @@ if ($ok && GETPOST('clean_perm_table', 'alpha')) {
 
 // force utf8 on tables
 if ($ok && GETPOST('force_utf8_on_tables', 'alpha')) {
-	print '<tr><td colspan="2"><br>*** Force page code and collation of tables into utf8/utf8_unicode_ci (for mysql/mariadb only)</td></tr>';
+	print '<tr><td colspan="2"><br>*** Force page code and collation of tables into utf8/utf8_unicode_ci and row_format=dynamic (for mysql/mariadb only)</td></tr>';
 
 	if ($db->type == "mysql" || $db->type == "mysqli") {
 		$force_utf8_on_tables = GETPOST('force_utf8_on_tables', 'alpha');
@@ -1240,11 +1241,18 @@ if ($ok && GETPOST('force_utf8_on_tables', 'alpha')) {
 
 			print '<tr><td colspan="2">';
 			print $table;
-			$sql = "ALTER TABLE ".$table." CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci";
-			print '<!-- '.$sql.' -->';
+			$sql1 = "ALTER TABLE ".$table." ROW_FORMAT=dynamic";
+			$sql2 = "ALTER TABLE ".$table." CONVERT TO CHARACTER SET utf8 COLLATE utf8_unicode_ci";
+			print '<!-- '.$sql1.' -->';
+			print '<!-- '.$sql2.' -->';
 			if ($force_utf8_on_tables == 'confirmed') {
-				$resql = $db->query($sql);
-				print ' - Done ('.($resql ? 'OK' : 'KO').')';
+				$resql1 = $db->query($sql1);
+				if ($resql1) {
+					$resql2 = $db->query($sql2);
+				} else {
+					$resql2 = false;
+				}
+				print ' - Done ('.(($resql1 && $resql2) ? 'OK' : 'KO').')';
 			} else {
 				print ' - Disabled';
 			}
diff --git a/htdocs/user/class/user.class.php b/htdocs/user/class/user.class.php
index 84118961692..28542667dff 100644
--- a/htdocs/user/class/user.class.php
+++ b/htdocs/user/class/user.class.php
@@ -357,6 +357,7 @@ class User extends CommonObject
 	 */
 	public $fk_warehouse;
 
+
 	public $fields = array(
 		'rowid'=>array('type'=>'integer', 'label'=>'TechnicalID', 'enabled'=>1, 'visible'=>-2, 'notnull'=>1, 'index'=>1, 'position'=>1, 'comment'=>'Id'),
 		'lastname'=>array('type'=>'varchar(50)', 'label'=>'LastName', 'enabled'=>1, 'visible'=>1, 'notnull'=>1, 'showoncombobox'=>1, 'index'=>1, 'position'=>20, 'searchall'=>1),