Question : Exchange 2010 mailbox move and activesync issue

We are in the process of moving mailboxes from our Exchange 2003 server to our new Exchange 2010 server. Activesync was working before I moved my mailbox across onto the new 2010 server. Since then I cannot sync the mobile device. I have tried removing the settings from the device and reloading them with no success.

On the device I get the following message Exchange Activesync encoutnered a temporary error. If this condition persists please contact your Exchange Administrator

Support code 0x86000C0A.

When I run the Exchange remote connectivity analyser I get the error listed below which points me to which is related to Exchange 2003 and forms based authentication. As the mailbox is now on exhcange 2010 I do not know what to do.

ExRCA is testing Exchange ActiveSync.
 The Exchange ActiveSync test failed.
 Test Steps
 Attempting to resolve the host name in DNS.
 Host successfully resolved
 Additional Details
 IP(s) returned:

Testing TCP Port 443 on host to ensure it is listening and open.
 The port was opened successfully.
ExRCA is testing the SSL certificate to make sure it's valid.
 The certificate passed all validation requirements.
 Test Steps
 The certificate name is being validated.
 Successfully validated the certificate name
 Additional Details
 Found hostname in Certificate Subject Alternative Name entry

Validating certificate trust for Windows Mobile Devices
 The certificate is trusted and all certificates are present in the chain.
 Additional Details
 Certificate is trusted for Windows Mobile 5 and Later platforms. Root = Secure Server Certification Authority, OU=(c) 1999 Limited, incorp. by ref. (limits liab.),, C=US

The certificate date is being confirmed to ensure the certificate is valid.
 Date validation passed. The certificate hasn't expired.
 Additional Details
 Certificate is valid: NotBefore = 5/22/2010 12:00:00 AM, NotAfter = 5/26/2011 11:59:59 PM"

The IIS configuration is being checked for client certificate authentication.
 Client certificate authentication wasn't detected.
 Additional Details
 Accept/Require Client Certificates not configured.

Testing Http Authentication Methods for URL
 The HTTP authentication methods are correct.
 Additional Details
 Found all expected authentication methods and no disallowed methods. Methods Found: Basic

An ActiveSync session is being attempted with the server.
 Errors were encountered while testing the ActiveSync session
 Test Steps
 ExRCA is attempting to send the OPTIONS command to the server.
 OPTIONS response was successfully received and is valid
 Additional Details
 Headers received: Allow: OPTIONS,POST
MS-Server-ActiveSync: 14.0
MS-ASProtocolVersions: 2.0,2.1,2.5,12.0,12.1,14.0
MS-ASProtocolCommands: Sync,SendMail,SmartForward,SmartReply,GetAttachment,GetHierarchy,CreateCollection,DeleteCollection,MoveCollection,FolderSync,FolderCreate,FolderDelete,FolderUpdate,MoveItems,GetItemEstimate,MeetingResponse,Search,Settings,Ping,ItemOperations,Provision,ResolveRecipients,ValidateCert
Content-Length: 0
Cache-Control: private
Date: Mon, 24 May 2010 20:18:08 GMT
Server: Microsoft-IIS/7.5
X-AspNet-Version: 2.0.50727
X-Powered-By: ASP.NET

ExRCA is attempting the FolderSync command on the Exchange ActiveSync session.
 The test of the FolderSync command failed.
  Tell me more about this issue and how to resolve it
 Additional Details
 Exchange ActiveSync returned an HTTP 500 response.

Answer : Exchange 2010 mailbox move and activesync issue

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