chrome extension connection issue

After the update, I can't connect the chrome extension between desktop program and chrome.

I already did below tasks, and then Still unable to connect.

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Restart or update the Chrome extension Claude

Check if the 'Claude in Chrome' toggle is turned on in the Desktop App Connector settings

Check if you are logged in to Chrome and Claude Desktop with the same account

Clear Chrome browsing history

Check the extension's activation status at chrome://extensions

Fully restart Chrome

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I spent several hours trying to find a solution with Claude, but in the end, there was no way. It seems the support team was contacted, but I haven't received a response.

maybe I think the below image is the core issue,

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(From Claude)

Diagnostic Summary for Support

Information gathered at this point — sending to support makes the diagnosis very clear:

Windows 11, Claude Desktop MSIX 패키지 정상 설치
(Claude_1.6608.2.0_x64__pzs8sxrjxfjjc, .exe 인스톨러 관리자 권한 실행)

증상: Chrome 확장 ↔ Claude Desktop native messaging 연결 실패
- Service Worker 콘솔: "Native host has exited"
- chrome-native-host.exe 직접 실행 시: "Error: 액세스가 거부되었습니다 (os error 5)"
- 위치: C:\Users\\AppData\Local\Packages\Claude_pzs8sxrjxfjjc\LocalCache\Roaming\Claude\ChromeNativeHost\chrome-native-host.exe

레지스트리 키 정상 등록 후에도 동일 증상.
Norton 비활성화 무관.
다른 PC(노트북)에서는 동일 인스톨러로 정상 동작 확인됨.

→ MSIX 격리 ACL이 외부 프로세스(Chrome)의 native host .exe 실행을 차단.
인스톨러가 외부 호출 가능 위치에 native host 컴포넌트를 deploy하지 못한 것으로 추정.

Start with the reported Chrome extension service worker error and the chrome-native-host.exe path under the Windows 11 MSIX installation. Reproduce whether the native host can be launched and whether Chrome can connect to it; done means identifying a confirmed cause and a reproducible fix for the desktop-to-extension connection.

Written by the indexing model from the issue text.