MS-ASProtocolCommands: Sync,SendMail,SmartForward,SmartReply,GetAttachment,GetHierarchy,CreateCollection,DeleteCollection,MoveCollection,FolderSync,FolderCreate,FolderDelete,FolderUpdate,MoveItems,GetItemEstimate,MeetingResponse,Search,Settings,Ping,ItemOperations,Provision,ResolveRecipients,ValidateCertĪttempting the FolderSync command on the Exchange ActiveSync session. The OPTIONS response was successfully received and is valid. The error I experienced when running the Exchange Remote Connectivity Analyzer (ExRCA) against a problematic user was as follows:Īn ActiveSync session is being attempted with the server.Įrrors were encountered while testing the Exchange ActiveSync session.Īttempting to send the OPTIONS command to the server. When creating a new test account, Active Sync works fine so the issue is narrowed down to either a problem with the user account migrated from Exchange 2003 or a problem with the mailbox. The next morning when users got to work some users were complaining that their email was not working on their mobile phone. I migrated 600 mailboxes to a new Exchange server from 2003 to 2010.

Microsoft activesync tester