Hi Prabhu, Thanks for this but the error i gave was server sided. My PDA reports support code 0x85010014, this code is massively found on google but most anwsers there are about activesync client for windows XP. I'm not using that, i'm using activesync on my PDA (Windows Mobile 5). Marcel ________________________________ Van: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] Namens Prabhu Kamuni Verzonden: dinsdag 9 mei 2006 13:32 Aan: exchangelist@xxxxxxxxxxxxx Onderwerp: [ExchangeList] Re: FW: exchange event ID: 1503 when trying to sync using OMA Hi, Please check this it will help you http://support.microsoft.com/kb/330461/en-us Marcel Stangenberger <marcel.stangenberger@xxxxx> wrote: Hi all, i'm trying to get my PDA to sync with our exchange server (windows 2003/ exchange 2003 SP2) but i keep getting the following error in the event logs when i am trying to sync. I've anyone can help me resolve the issue or give me good hints on how to resolve it it will be most appriciated. eventID: 1503 An unknown error occurred while processing the current request: Message: The remote server returned an error: (501) Not Implemented. Source: Microsoft.Exchange.OMA.ExchangeDataProvider Stack trace: at Microsoft.Exchange.OMA.ExchangeDataProvider.OmaWebRequest.GetRequestStream() at Microsoft.Exchange.OMA.ExchangeDataProvider.ExchangeServices.GetSpecialFolders() at Microsoft.Exchange.OMA.ExchangeDataProvider.ExchangeServices..ctor(UserInfo user) Message: Exception has been thrown by the target of an invocation. Source: mscorlib Stack trace: at System.Reflection.RuntimeConstructorInfo.InternalInvoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean isBinderDefault) at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) at Microsoft.Exchange.OMA.UserInterface.Global.Session_Start(Object sender, EventArgs e) Message: Exception of type Microsoft.Exchange.OMA.DataProviderInterface.ProviderException was thrown. EventMessage: UserMessage: A System error has occurred while processing your request. Please try again. If the problem persists, contact your administrator. Source: Microsoft.Exchange.OMA.UserInterface Stack trace: at Microsoft.Exchange.OMA.UserInterface.Global.Session_Start(Object sender, EventArgs e) at System.Web.SessionState.SessionStateModule.RaiseOnStart(EventArgs e) at System.Web.SessionState.SessionStateModule.CompleteAcquireState() at System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData) at System.Web.AsyncEventExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) For more information, see Help and Support Center at Op dit e-mailbericht is een disclaimer van toepassing, welke te vinden is op http://www.xb.nl/disclaimer.html Thanks Prabhakar,Banglore. INDIA. ________________________________ Blab-away for as little as 1¢/min. Make PC-to-Phone Calls <http://us.rd.yahoo.com/mail_us/taglines/postman2/*http://us.rd.yahoo.com/evt=39663/*http://voice.yahoo.com> using Yahoo! Messenger with Voice.