Can't sync Pocket PC with Active Sync

Posted on 2006-05-25
Last Modified: 2010-04-19

I've been trying to get microsoft mobile devices to sync with our exchange server.  When I try to sync I get an error on the device saying that the user doesn't have permission to access the server.  I think this is related to the error I get when I try to login to the OMA site (http://servername/oma)  I get a login prompt twice the I get this error

A System error has occurred while processing your request. Please try again. If the problem persists, contact your administrator.

In the event log this error is reported

No Basic credentials were found in the HTTP request. To fix this problem, verify that Basic authentication is turned on and all other authentication methods are turned off on the Outlook(R) Mobile Access virtual directory.

and this

An unknown error occurred while processing the current request:
Message: Object reference not set to an instance of an object.
Source: Microsoft.Exchange.OMA.UserInterface
Stack trace:
   at Microsoft.Exchange.OMA.UserInterface.Global.Application_PreRequestHandlerExecute(Object sender, EventArgs e)
   at System.Web.SyncEventExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

I've tried go through several solutions I found on this site and others.  SSL is not required and I tried creating a new virtual directory and editing the exchangevdir in the registry, still getting the same error.

Please help, this has become a big issue with our sales dept and I'm hearing about it on a daily basis.

Thank You,


Question by:tcsnetwork
    1 Comment
    LVL 74

    Accepted Solution

    Yikes... creating a new virtual directory is far beyond what I would want to attempt with OWA.  There are far too many things that are automatically configured properly in SBS, so I would definitely avoid doing such things like that in the future unless you find an official KB article which describes the procedure.

    Your best bet at this point would probably be to remove/reinstall via this KB:

    Note that it is valid for Exchange 2003 as well as 2000.

    Then this overview will help you get connected properly:


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