Article ID: 915438 - View products that this article applies to.
When you use Microsoft ActiveSync or Windows Mobile Device Manager to synchronize a Microsoft Windows Mobile device with Microsoft Mobile Information Server (IIS) or with Microsoft Exchange Server, you receive the following error message:
Microsoft Outlook Web Access and Microsoft Outlook Mobile Access work correctly. However, you are unable to synchronize your data when connected to the computer, you cannot sync directly with the Exchange Server through desktop pass-through.
The security certificate on the server is invalid. Contact your system administrator or ISP to install a valid certificate on the server and try again.
If your device is Windows Mobile 5.0 the issue may be caused by the device being locked by the manufacturer. This lock prevents you from installing Secure Sockets Layer (SSL) certificates correctly.
If you have checked with the manufacturer and your device is not locked or if you are using Windows Mobile 6.0 or later version then this problem may be caused by a mismatched or missing certificate on the device or on the Exchange Server with which you are synchronizing.
Step 1: Install the latest version of ActiveSync or Windows Mobile Device Manager.
Windows XP or earlier operating systemsSome specific causes of this error have been resolved in ActiveSync 4.5. If you are using Windows XP or earlier versions of the operating system, upgrade to ActiveSync 4.5. http://www.microsoft.com/windowsmobile/en-us/downloads/microsoft/activesync-download.mspx
Windows Vista or later operating systemsIf you receive this error on Windows Vista or later operating systems, upgrade to the latest version of Windows Mobile Device Manager. http://www.microsoft.com/windowsmobile/en-us/downloads/microsoft/device-center-download.mspx
Step 2: Contact the device manufacturer or mobile operator
The device manufacturer and wireless carriers or mobile operators determine the security policies shipped on their devices. Contact your device vendor or mobile operator to ensure that the device you have will work with the certificates you need to use.
Step 3: Make sure you can access the mail on OWA
Make sure that your client access server is working properly. To do so, open Internet Explorer and go to Outlook Web Access (OWA) and log on. The default URL for OWA is HTTPS://server_name/OWA.
Step 4: Check the root certificates installed on the client.
To view or delete the certificates on your device, follow these steps:
WARNING: Deleting a root certificate on your device can make it impossible to use SSL protocols and to synchronize with an Exchange server.For more information about synchronization failures, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/927465/ )Error message when you try to synchronize a Windows Mobile-based device by using Exchange ActiveSync for Exchange 2003 or for Exchange 2007 or for Exchange 2010: "Synchronization failed"
(https://support.microsoft.com/kb/915840/ )How to install root certificates on a Windows Mobile-based device
If your trouble is with Exchange 2003 or 2007, your answer may be found in the following article: http://support.microsoft.com/kb/927465
For more advanced technical information:
Visit our Windows Phone Forums
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(http://social.microsoft.com/Forums/en-US/category/windowsmobile/)for more helpful hints and ideas.
Article ID: 915438 - Last Review: May 3, 2010 - Revision: 5.0