diff --git a/.changeset/clean-kiwis-fly.md b/.changeset/clean-kiwis-fly.md
new file mode 100644
index 000000000..505519b00
--- /dev/null
+++ b/.changeset/clean-kiwis-fly.md
@@ -0,0 +1,6 @@
+---
+"claude-dev": patch
+---
+
+browserConnectionResult protobus migration/removal
+
diff --git a/src/shared/ExtensionMessage.ts b/src/shared/ExtensionMessage.ts
index 5383996ed..c6ba31d0d 100644
--- a/src/shared/ExtensionMessage.ts
+++ b/src/shared/ExtensionMessage.ts
@@ -35,7 +35,6 @@ export interface ExtensionMessage {
 		| "userCreditsBalance"
 		| "userCreditsUsage"
 		| "userCreditsPayments"
-		| "browserConnectionResult"
 		| "fileSearchResults"
 		| "grpc_response" // New type for gRPC responses
 	text?: string
diff --git a/webview-ui/src/components/settings/BrowserSettingsSection.tsx b/webview-ui/src/components/settings/BrowserSettingsSection.tsx
index e37534ce3..7f313b04c 100644
--- a/webview-ui/src/components/settings/BrowserSettingsSection.tsx
+++ b/webview-ui/src/components/settings/BrowserSettingsSection.tsx
@@ -59,20 +59,6 @@ export const BrowserSettingsSection: React.FC = () => {
 	const [isBundled, setIsBundled] = useState(false)
 	const [detectedChromePath, setDetectedChromePath] = useState<string | null>(null)
 
-	// Listen for browser connection test results
-	useEffect(() => {
-		const handleMessage = (event: MessageEvent) => {
-			const message = event.data
-			if (message.type === "browserConnectionResult") {
-				setConnectionStatus(message.success)
-				setIsCheckingConnection(false)
-			}
-		}
-
-		window.addEventListener("message", handleMessage)
-		return () => window.removeEventListener("message", handleMessage)
-	}, [])
-
 	// Auto-clear relaunch result message after 15 seconds
 	useEffect(() => {
 		if (relaunchResult) {