diff --git a/htdocs/cashdesk/deconnexion.php b/htdocs/cashdesk/deconnexion.php
index 471ffd967ff..64e712544d1 100644
--- a/htdocs/cashdesk/deconnexion.php
+++ b/htdocs/cashdesk/deconnexion.php
@@ -16,9 +16,17 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
+// Add real path in session
+$realpath='';
+if (preg_match('/\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"]))
+{
+	$result = preg_match('/^([^.]+)\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"],$regs);
+	$realpath = $regs[1];
+}
+
 // Init session. Name of session is specific to Dolibarr instance.
-$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
-$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
+$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
+$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
 if (! empty($_COOKIE[$sessiontimeout])) ini_set('session.gc_maxlifetime',$_COOKIE[$sessiontimeout]);
 session_name($sessionname);
 session_start();
@@ -26,8 +34,8 @@ session_start();
 include('../master.inc.php');
 
 // Destroy session
-$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
-$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
+$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
+$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
 if (! empty($_COOKIE[$sessiontimeout])) ini_set('session.gc_maxlifetime',$_COOKIE[$sessiontimeout]);
 session_name($sessionname);
 session_destroy();
diff --git a/htdocs/cashdesk/include/environnement.php b/htdocs/cashdesk/include/environnement.php
index 79be2d49c24..7fab06fcac6 100644
--- a/htdocs/cashdesk/include/environnement.php
+++ b/htdocs/cashdesk/include/environnement.php
@@ -17,9 +17,17 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
+// Add real path in session
+$realpath='';
+if (preg_match('/\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"]))
+{
+	$result = preg_match('/^([^.]+)\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"],$regs);
+	$realpath = $regs[1];
+}
+
 // Init session. Name of session is specific to Dolibarr instance.
-$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
-$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
+$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
+$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
 if (! empty($_COOKIE[$sessiontimeout])) ini_set('session.gc_maxlifetime',$_COOKIE[$sessiontimeout]);
 session_name($sessionname);
 session_start();
diff --git a/htdocs/cashdesk/index.php b/htdocs/cashdesk/index.php
index 20c3d28738d..08c305f0d9c 100644
--- a/htdocs/cashdesk/index.php
+++ b/htdocs/cashdesk/index.php
@@ -26,9 +26,17 @@
 // This is to make Dolibarr working with Plesk
 set_include_path($_SERVER['DOCUMENT_ROOT'].'/htdocs');
 
+// Add real path in session
+$realpath='';
+if (preg_match('/\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"]))
+{
+	$result = preg_match('/^([^.]+)\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"],$regs);
+	$realpath = $regs[1];
+}
+
 // Init session. Name of session is specific to Dolibarr instance.
-$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
-$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
+$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
+$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
 if (! empty($_COOKIE[$sessiontimeout])) ini_set('session.gc_maxlifetime',$_COOKIE[$sessiontimeout]);
 session_name($sessionname);
 session_start();
diff --git a/htdocs/lib/antispamimage.php b/htdocs/lib/antispamimage.php
index 7a02e72679e..79f99473eff 100644
--- a/htdocs/lib/antispamimage.php
+++ b/htdocs/lib/antispamimage.php
@@ -31,9 +31,17 @@ if (! defined('NOREQUIRESOC'))  define('NOREQUIRESOC','1');
 // This is to make Dolibarr working with Plesk
 set_include_path($_SERVER['DOCUMENT_ROOT'].'/htdocs');
 
+// Add real path in session
+$realpath='';
+if (preg_match('/\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"]))
+{
+	$result = preg_match('/^([^.]+)\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"],$regs);
+	$realpath = $regs[1];
+}
+
 // Init session. Name of session is specific to Dolibarr instance.
-$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
-$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
+$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
+$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
 if (! empty($_COOKIE[$sessiontimeout])) ini_set('session.gc_maxlifetime',$_COOKIE[$sessiontimeout]);
 session_name($sessionname);
 session_start();
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index e05147c97a0..285e2b8c109 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -122,9 +122,17 @@ if (! defined('NOCSRFCHECK') && $_SERVER['REQUEST_METHOD'] != 'GET' && ! empty($
 // This is to make Dolibarr working with Plesk
 set_include_path($_SERVER['DOCUMENT_ROOT'].'/htdocs');
 
+// Add real path in session
+$realpath='';
+if (preg_match('/\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"]))
+{
+	$result = preg_match('/^([^.]+)\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"],$regs);
+	$realpath = $regs[1];
+}
+
 // Init session. Name of session is specific to Dolibarr instance.
-$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
-$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
+$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
+$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
 if (! empty($_COOKIE[$sessiontimeout])) ini_set('session.gc_maxlifetime',$_COOKIE[$sessiontimeout]);
 session_name($sessionname);
 session_start();
diff --git a/htdocs/user/logout.php b/htdocs/user/logout.php
index 23cc1d4714c..365195c4337 100644
--- a/htdocs/user/logout.php
+++ b/htdocs/user/logout.php
@@ -55,9 +55,17 @@ if ($conf->phenix->enabled && $conf->phenix->cookie)
 unset($_SESSION['dol_login']);
 unset($_SESSION['dol_entity']);
 
+// Add real path in session
+$realpath='';
+if (preg_match('/\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"]))
+{
+	$result = preg_match('/^([^.]+)\/htdocs\//i',$_SERVER["SCRIPT_FILENAME"],$regs);
+	$realpath = $regs[1];
+}
+
 // Destroy session
-$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
-$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"]);
+$sessionname='DOLSESSID_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
+$sessiontimeout='DOLSESSTIMEOUT_'.md5($_SERVER["SERVER_NAME"].$_SERVER["DOCUMENT_ROOT"].$realpath);
 if (! empty($_COOKIE[$sessiontimeout])) ini_set('session.gc_maxlifetime',$_COOKIE[$sessiontimeout]);
 session_name($sessionname);
 session_destroy();