Recently we upgraded our exchange server to sp2. Upon completion of the upgrade to sp2 we can no longer activesync our windows mobile 5 devices. We an error that Synchronization could not be completed Support Code 0x80830003. We have a front end server and a back end server and both have been upgraded to sp2. That's all that's been done to the servers and now we get this error. Does anyone have any ideas? Thanks, Andy