diff --git a/indra/newview/llimview.cpp b/indra/newview/llimview.cpp
index f5362acbfeb2f3bda696103da777701e7ecf82cb..8917cc11e18d668d45771328268f147b678b849f 100644
--- a/indra/newview/llimview.cpp
+++ b/indra/newview/llimview.cpp
@@ -1227,15 +1227,15 @@ LLIMMgr::showSessionEventError(
 	const std::string& error_string,
 	const LLUUID session_id)
 {
-	const LLFloater* floater = getFloaterBySessionID (session_id);
-	if (!floater) return;
-
 	LLSD args;
+	LLStringUtil::format_map_t event_args;
+
+	event_args["RECIPIENT"] = LLIMModel::getInstance()->getName(session_id);
+
 	args["REASON"] =
 		LLTrans::getString(error_string);
 	args["EVENT"] =
-		LLTrans::getString(event_string);
-	args["RECIPIENT"] = floater->getTitle();
+		LLTrans::getString(event_string, event_args);
 
 	LLNotificationsUtil::add(
 		"ChatterBoxSessionEventError",
diff --git a/indra/newview/skins/default/xui/en/strings.xml b/indra/newview/skins/default/xui/en/strings.xml
index a1f2548f815c7a303ca92f2f7d524aa207c0100e..9aae04ba38105831f2c21712987690f042c54f95 100644
--- a/indra/newview/skins/default/xui/en/strings.xml
+++ b/indra/newview/skins/default/xui/en/strings.xml
@@ -2964,12 +2964,26 @@ If you continue to receive this message, contact the [SUPPORT_SITE].
   <string name="not_a_mod_error">
     You are not a session moderator.
   </string>
+  <!--Some times string name is getting from the body of server response.
+  For ex.: from gIMMgr::showSessionStartError in the LLViewerChatterBoxSessionStartReply::post. 
+  In case of the EXT-3562 issue 'muted' is passed into the gIMMgr::showSessionStartError as a string name.
+  So, let add string with name="muted" with the same value as "muted_error" -->
+  <string name="muted">
+    A group moderator disabled your text chat.
+  </string>
   <string name="muted_error">
     A group moderator disabled your text chat.
   </string>
   <string name="add_session_event">
     Unable to add users to chat session with [RECIPIENT].
   </string>
+  <!--Some times string name is getting from the body of server response.
+  For ex.: from gIMMgr::showSessionStartError in the LLViewerChatterBoxSessionStartReply::post. 
+  In case of the EXT-3562 issue 'message' is passed into the gIMMgr::showSessionStartError as a string name.
+  So, let add string with name="message" with the same value as "message_session_event" -->
+  <string name="message">
+    Unable to send your message to the chat session with [RECIPIENT].
+  </string>  
   <string name="message_session_event">
     Unable to send your message to the chat session with [RECIPIENT].
   </string>