Unexpected exchange mailbox server error – ActiveSync error from application log. Event ID: 3005
Unexpected Exchange mailbox Server error: Server: [server.domain.com] User: [users@domain.com] HTTP status code: [400]. Verify that the Exchange mailbox Server is working correctly. In application log, every time someone tries to sync their phone up. The server in use is running windows server 2k3 r2 with all the patches. First approach – Instructions: 1. […]