diff --git a/src/components/chat/chat-widget.tsx b/src/components/chat/chat-widget.tsx
index f7922b4..a3b024d 100644
--- a/src/components/chat/chat-widget.tsx
+++ b/src/components/chat/chat-widget.tsx
@@ -38,7 +38,6 @@ import {
 const MAX_MESSAGE_LENGTH = 4000
 const MAX_ATTACHMENT_SIZE = 5 * 1024 * 1024 // 5MB
 const MAX_ATTACHMENTS = 5
-const CHAT_WIDGET_CHANNEL = "chat-widget-sync"
 const STORAGE_KEY = "chat-widget-state"
 
 type ChatWidgetState = {
@@ -281,7 +280,6 @@ export function ChatWidget() {
     return null
   })
   const [draft, setDraft] = useState("")
-  const broadcastChannelRef = useRef<BroadcastChannel | null>(null)
   const [isSending, setIsSending] = useState(false)
   const [isEndingChat, setIsEndingChat] = useState(false)
   const [attachments, setAttachments] = useState<UploadedFile[]>([])
@@ -320,31 +318,32 @@ export function ChatWidget() {
   const machineOnline = liveChat?.machineOnline ?? false
   const machineHostname = liveChat?.machineHostname
 
-  // Sincronizar estado entre abas usando BroadcastChannel
+  // Sincronizar estado entre abas usando evento storage do localStorage
+  // O evento storage dispara automaticamente em TODAS as outras abas quando localStorage muda
   useEffect(() => {
     if (typeof window === "undefined") return
 
-    // Criar canal de broadcast
-    const channel = new BroadcastChannel(CHAT_WIDGET_CHANNEL)
-    broadcastChannelRef.current = channel
+    const handleStorageChange = (event: StorageEvent) => {
+      // Ignorar mudancas em outras chaves
+      if (event.key !== STORAGE_KEY) return
+      // Ignorar se nao tem valor novo
+      if (!event.newValue) return
 
-    // Ouvir mensagens de outras abas
-    channel.onmessage = (event: MessageEvent<ChatWidgetState>) => {
-      const state = event.data
-      setIsOpen(state.isOpen)
-      setIsMinimized(state.isMinimized)
-      if (state.activeTicketId) {
-        setActiveTicketId(state.activeTicketId)
-      }
+      try {
+        const state = JSON.parse(event.newValue) as ChatWidgetState
+        setIsOpen(state.isOpen)
+        setIsMinimized(state.isMinimized)
+        if (state.activeTicketId) {
+          setActiveTicketId(state.activeTicketId)
+        }
+      } catch {}
     }
 
-    return () => {
-      channel.close()
-      broadcastChannelRef.current = null
-    }
+    window.addEventListener("storage", handleStorageChange)
+    return () => window.removeEventListener("storage", handleStorageChange)
   }, [])
 
-  // Salvar estado no localStorage e broadcast para outras abas quando muda
+  // Salvar estado no localStorage quando muda (dispara evento storage em outras abas)
   useEffect(() => {
     if (typeof window === "undefined") return
 
@@ -354,15 +353,10 @@ export function ChatWidget() {
       activeTicketId,
     }
 
-    // Salvar no localStorage para persistir entre reloads
+    // Salvar no localStorage (isso dispara evento storage em outras abas automaticamente)
     try {
       localStorage.setItem(STORAGE_KEY, JSON.stringify(state))
     } catch {}
-
-    // Broadcast para outras abas
-    if (broadcastChannelRef.current) {
-      broadcastChannelRef.current.postMessage(state)
-    }
   }, [isOpen, isMinimized, activeTicketId])
 
   // Auto-selecionar primeira sessão se nenhuma selecionada