diff --git a/htdocs/langs/en_US/website.lang b/htdocs/langs/en_US/website.lang
index df799470b6d..035d0661c95 100644
--- a/htdocs/langs/en_US/website.lang
+++ b/htdocs/langs/en_US/website.lang
@@ -34,9 +34,10 @@ ViewPageInNewTab=View page in new tab
 SetAsHomePage=Set as Home page
 RealURL=Real URL
 ViewWebsiteInProduction=View web site using home URLs
-SetHereVirtualHost=If you can create, on your web server (Apache, Nginx, ...), a dedicated Virtual Host with PHP enabled and a Root directory on <strong>%s</strong><br>then enter here the virtual hostname you have created, so the preview can be done also using this direct web server access, and not only using Dolibarr server.
-PreviewSiteServedByWebServer=Preview %s in a new tab.<br><br>The %s will be served by an external web server (like Apache, Nginx, IIS). You must install and setup this server before to point to directory:<br><strong>%s</strong><br>URL served by external server:<br><strong>%s</strong>
-PreviewSiteServedByDolibarr=Preview %s in a new tab.<br><br>The %s will be served by Dolibarr server so it does not need any extra web server (like Apache, Nginx, IIS) to be installed.<br>The inconvenient is that URL of pages are not user friendly and start with path of your Dolibarr.<br>URL served by Dolibarr:<br><strong>%s</strong><br><br>To use your own external web server to serve this web site, create a virtual host on your web server that point on directory<br><strong>%s</strong><br>then enter the name of this virtual server and click on the other preview button.  
+SetHereVirtualHost=If you can create, on your web server (Apache, Nginx, ...), a dedicated Virtual Host with PHP enabled and a Root directory on<br><strong>%s</strong><br>then enter here the virtual hostname you have created, so the preview can be done also using this dedicated web server access instead of only using Dolibarr server.
+CheckVirtualHostPerms=Check also that virtual host has read access on files into<br><strong>%s</strong>
+PreviewSiteServedByWebServer=<u>Preview %s in a new tab.</u><br><br>The %s will be served by an external web server (like Apache, Nginx, IIS). You must install and setup this server before to point to directory:<br><strong>%s</strong><br>URL served by external server:<br><strong>%s</strong>
+PreviewSiteServedByDolibarr=<u>Preview %s in a new tab.</u><br><br>The %s will be served by Dolibarr server so it does not need any extra web server (like Apache, Nginx, IIS) to be installed.<br>The inconvenient is that URL of pages are not user friendly and start with path of your Dolibarr.<br>URL served by Dolibarr:<br><strong>%s</strong><br><br>To use your own external web server to serve this web site, create a virtual host on your web server that point on directory<br><strong>%s</strong><br>then enter the name of this virtual server and click on the other preview button.  
 VirtualHostUrlNotDefined=URL of the virtual host served by external web server not defined
 NoPageYet=No pages yet
 SyntaxHelp=Help on specific syntax tips
diff --git a/htdocs/website/index.php b/htdocs/website/index.php
index 77edf7728c3..1b4bd000e38 100644
--- a/htdocs/website/index.php
+++ b/htdocs/website/index.php
@@ -1413,29 +1413,37 @@ if (count($object->records) > 0)
 
 	if ($action == 'preview' || $action == 'createfromclone' || $action == 'createpagefromclone')
 	{
-		print '<a class="websitebuttonsitepreview" id="previewsite" href="'.$urlwithroot.'/public/website/index.php?website='.$website.'" target="tab'.$website.'" alt="'.dol_escape_htmltag($langs->trans("PreviewSiteServedByDolibarr", $langs->transnoentitiesnoconv("Site"), $langs->transnoentitiesnoconv("Site"), $urlint)).'">';
-		print $form->textwithpicto('', $langs->trans("PreviewSiteServedByDolibarr", $langs->transnoentitiesnoconv("Site"), $langs->transnoentitiesnoconv("Site"), $urlint, $dataroot), 1, 'preview');
+		$urlext=$virtualurl;
+		$urlint=$urlwithroot.'/public/website/index.php?website='.$website;
+
+		$htmltext = $langs->trans("PreviewSiteServedByDolibarr", $langs->transnoentitiesnoconv("Site"), $langs->transnoentitiesnoconv("Site"), $urlint, $dataroot);
+		$htmltext.='<br>'.$langs->trans("CheckVirtualHostPerms", DOL_DOCUMENT_ROOT);
+		print '<a class="websitebuttonsitepreview" id="previewsite" href="'.$urlwithroot.'/public/website/index.php?website='.$website.'" target="tab'.$website.'" alt="'.dol_escape_htmltag($htmltext).'">';
+		print $form->textwithpicto('', $htmltext, 1, 'preview');
 		print '</a>';
 
 		print '<div class="websiteinputurl" id="websiteinputurl">';
 		print '<input type="text" id="previewsiteurl" class="minwidth200imp" name="previewsite" placeholder="'.$langs->trans("http://myvirtualhost").'" value="'.$virtualurl.'">';
 		//print '<input type="submit" class="button" name="previewwebsite" target="tab'.$website.'" value="'.$langs->trans("ViewSiteInNewTab").'">';
-		$htmltext=$langs->trans("SetHereVirtualHost", $dataroot);
+		$htmltext =$langs->trans("SetHereVirtualHost", $dataroot);
+		$htmltext.='<br><br>'.$langs->trans("CheckVirtualHostPerms", DOL_DOCUMENT_ROOT);
 		print $form->textwithpicto('', $htmltext, 1, 'help', '', 0, 2, 'helpvirtualhost');
 		print '</div>';
 
-		$urlext=$virtualurl;
-		$urlint=$urlwithroot.'/public/website/index.php?website='.$website;
 		if (empty($object->fk_default_home))
 		{
+			$htmltext = '<span class="error">'.$langs->trans("YouMustDefineTheHomePage").'</span><br>'.$langs->trans("PreviewSiteServedByWebServer", $langs->transnoentitiesnoconv("Site"), $langs->transnoentitiesnoconv("Site"), $dataroot, $urlext?$urlext:'<span class="error">'.$langs->trans("VirtualHostUrlNotDefined").'</span>');
+			$htmltext.='<br><br>'.$langs->trans("CheckVirtualHostPerms", DOL_DOCUMENT_ROOT);
 			print '<span class="websitebuttonsitepreview websitebuttonsitepreviewdisabled cursornotallowed" id="previewsiteextdisabled" href="" target="tab'.$website.'ext" alt="'.dol_escape_htmltag($langs->trans("PreviewSiteServedByWebServer", $langs->transnoentitiesnoconv("Site"), $langs->transnoentitiesnoconv("Site"), $dataroot, $urlext)).'">';
-			print $form->textwithpicto('', '<span class="error">'.$langs->trans("YouMustDefineTheHomePage").'</span><br>'.$langs->trans("PreviewSiteServedByWebServer", $langs->transnoentitiesnoconv("Site"), $langs->transnoentitiesnoconv("Site"), $dataroot, $urlext?$urlext:'<span class="error">'.$langs->trans("VirtualHostUrlNotDefined").'</span>'), 1, 'preview_ext');
+			print $form->textwithpicto('', $htmltext, 1, 'preview_ext');
 			print '</span>';
 		}
 		else
 		{
+			$htmltext = $langs->trans("PreviewSiteServedByWebServer", $langs->transnoentitiesnoconv("Site"), $langs->transnoentitiesnoconv("Site"), $dataroot, $urlext?$urlext:'<span class="error">'.$langs->trans("VirtualHostUrlNotDefined").'</span>');
+			$htmltext.='<br><br>'.$langs->trans("CheckVirtualHostPerms", DOL_DOCUMENT_ROOT);
 			print '<a class="websitebuttonsitepreview'.($urlext?'':' websitebuttonsitepreviewdisabled cursornotallowed').'" id="previewsiteext" href="'.$urlext.'" target="tab'.$website.'ext" alt="'.dol_escape_htmltag($langs->trans("PreviewSiteServedByWebServer", $langs->transnoentitiesnoconv("Site"), $langs->transnoentitiesnoconv("Site"), $dataroot, $urlext)).'">';
-			print $form->textwithpicto('', $langs->trans("PreviewSiteServedByWebServer", $langs->transnoentitiesnoconv("Site"), $langs->transnoentitiesnoconv("Site"), $dataroot, $urlext?$urlext:'<span class="error">'.$langs->trans("VirtualHostUrlNotDefined").'</span>'), 1, 'preview_ext');
+			print $form->textwithpicto('', $htmltext, 1, 'preview_ext');
 			print '</a>';
 		}
 	}
@@ -1585,8 +1593,11 @@ if (count($object->records) > 0)
 			$realpage=$urlwithroot.'/public/website/index.php?website='.$website.'&pageref='.$websitepage->pageurl;
 			$pagealias = $websitepage->pageurl;
 
-			print '<a class="websitebuttonsitepreview" id="previewpage" href="'.$realpage.'&nocache='.dol_now().'" class="button" target="tab'.$website.'" alt="'.dol_escape_htmltag($langs->trans("PreviewSiteServedByDolibarr", $langs->transnoentitiesnoconv("Page"), $langs->transnoentitiesnoconv("Page"), $realpage)).'">';
-			print $form->textwithpicto('', $langs->trans("PreviewSiteServedByDolibarr", $langs->transnoentitiesnoconv("Page"), $langs->transnoentitiesnoconv("Page"), $realpage, $dataroot), 1, 'preview');
+			$htmltext = $langs->trans("PreviewSiteServedByDolibarr", $langs->transnoentitiesnoconv("Page"), $langs->transnoentitiesnoconv("Page"), $realpage, $dataroot);
+			$htmltext.='<br>'.$langs->trans("CheckVirtualHostPerms", DOL_DOCUMENT_ROOT);
+
+			print '<a class="websitebuttonsitepreview" id="previewpage" href="'.$realpage.'&nocache='.dol_now().'" class="button" target="tab'.$website.'" alt="'.dol_escape_htmltag($htmltext).'">';
+			print $form->textwithpicto('', $htmltext, 1, 'preview');
 			print '</a>';       // View page in new Tab
 
 			print '<div class="websiteinputurl" id="websiteinputpage">';
@@ -1597,8 +1608,11 @@ if (count($object->records) > 0)
 
 			$urlext=$virtualurl.'/'.$pagealias.'.php';
 			$urlint=$urlwithroot.'/public/website/index.php?website='.$website;
-			print '<a class="websitebuttonsitepreview'.($virtualurl?'':' websitebuttonsitepreviewdisabled cursornotallowed').'" id="previewpageext" href="'.$urlext.'" target="tab'.$website.'ext" alt="'.dol_escape_htmltag($langs->trans("PreviewSiteServedByWebServer", $langs->transnoentitiesnoconv("Page"), $langs->transnoentitiesnoconv("Page"), $dataroot, $urlext)).'">';
-			print $form->textwithpicto('', $langs->trans("PreviewSiteServedByWebServer", $langs->transnoentitiesnoconv("Page"), $langs->transnoentitiesnoconv("Page"), $dataroot, $virtualurl?$urlext:'<span class="error">'.$langs->trans("VirtualHostUrlNotDefined").'</span>'), 1, 'preview_ext');
+
+			$htmltext = $langs->trans("PreviewSiteServedByWebServer", $langs->transnoentitiesnoconv("Page"), $langs->transnoentitiesnoconv("Page"), $dataroot, $virtualurl?$urlext:'<span class="error">'.$langs->trans("VirtualHostUrlNotDefined").'</span>');
+
+			print '<a class="websitebuttonsitepreview'.($virtualurl?'':' websitebuttonsitepreviewdisabled cursornotallowed').'" id="previewpageext" href="'.$urlext.'" target="tab'.$website.'ext" alt="'.dol_escape_htmltag($htmltext).'">';
+			print $form->textwithpicto('', $htmltext, 1, 'preview_ext');
 			print '</a>';
 			//print '<input type="submit" class="button" name="previewpage" target="tab'.$website.'"value="'.$langs->trans("ViewPageInNewTab").'">';
 
@@ -1884,7 +1898,9 @@ if ($action == 'createsite')
 	print '</td></tr>';
 
 	print '<tr><td>';
-	print $form->textwithpicto($langs->trans('Virtualhost'), $langs->trans("SetHereVirtualHost", DOL_DATA_ROOT.'/website/<i>websiteref</i>'), 1, 'help', '', 0, 2, 'tooltipvirtual');
+	$htmltext = $langs->trans("SetHereVirtualHost", DOL_DATA_ROOT.'/website/<i>websiteref</i>');
+	$htmltext.='<br><br>'.$langs->trans("CheckVirtualHostPerms", DOL_DOCUMENT_ROOT);
+	print $form->textwithpicto($langs->trans('Virtualhost'), $htmltext, 1, 'help', '', 0, 2, 'tooltipvirtual');
 	print '</td><td>';
 	print '<input type="text" class="flat minwidth300" name="WEBSITE_DESCRIPTION" value="'.dol_escape_htmltag($sitedesc).'">';
 	print '</td></tr>';