HI I have problem with Exchange Server 2003. One of the users not able to connect her calendar to her mobile device. So i went to see it in Event Viewer and message i got is about EVENT ID 3005 and HTTP error 500. Only one user is affected the rest of the people are ok. message is Unexpected Exchange mailbox Server error: Server (ts0009.domain.com]User:[user@domain.com]HTTP status code: [500]. Verify that tthe Exchange mailbox Server is working correctly Server is Windows 2003 and as I said it is only one user affected. Hope someone has the solution ThanksDalibor Bosic

Hi, According to this article you should try to move the mailbox to another server if possible. http://www.microsoft.com/technet/support/ee/transform.aspx?ProdName=Exchange&ProdVer=6.5&EvtID=3005&EvtSrc=Server+ActiveSync&LCID=1033 Leif

Hi, Thanks for your answer. We have only one exchange 2003 server. Soon to be migrated to exchange 2010 but for now it is only one exchange server 2003Dalibor Bosic

Hi cer113 This is a common errortake a look here Activesync error from application log, Event ID: 3005 http://social.technet.microsoft.com/Forums/en/exchangesvrmobility/thread/66a33f3a-d945-42e2-ac80-3e4244f9b258 ActiveSync Windows Mobile 5.0 Status 400 http://www.webservertalk.com/message1478873.html You can find something helpful information in http://social.technet.microsoft.com/Forums/en-US/exchangesvrmobility/thread/0ab90aca-2559-4c60-a178-a4f6031ca5b4 Thanks Jeff TechNet