If this is the case,Įxchange ActiveSync will re-create the partnership with the device. This can occur if a user tries to modify the same item from multiple computers. This may have been caused by an outdated or corrupted Exchange ActiveSync device partnership. The Event Log contains warnings related to the user that cannot sync, the warning details are posted below.Īn exception occurred and was handled by Exchange ActiveSync. Perhaps I should check these things first HEHE. This issue does not seem to make any sense at all and I am pulling my hair out could someone offer any further ideas how to resolve this? We have reset the phone on numerous occassions and put the ActiveSync details in again but no luck.

I have removed the ActiveSync virtual directory in IIS using the powershell script and recreated it to make sure permissions are correct on the directory. I have made sure that the user who cannot sync has inherited permissions in AD (checked permissions against permissions of user who can sync). I have installed the self signed Root CA cert on all handsets to remove the Certificate Error. We have AD running on a Server 2008 R2 Core box, Exchange 2010 running on Server 2008 R2 and a Forefront Threat Management Gateway configured for Exchange Publishing (OWA, ActiveSync and Outlook Anywhere).Īll other users with a Windows Mobile 6.1 or 6.5 phone is able to sync with no errors. I have one user who has a Windows Mobile 6.1 phone who cannot sync with Exchange, the error each time is ActiveSync encountered a problem on the server. Let me start by saying I have read and tried the solutions in numerous articles about this issue.

Microsoft activesync windows mobile 6.1