Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.
After you install Windows Vista Service Pack 1 (SP1), Microsoft Windows Mobile Device Center does not connect to your Windows Mobile-based device. Therefore, you cannot synchronize your computer and the device.
To resolve this problem, reinstall Windows Mobile Device Center. To do this, follow these steps:
Click Start , and then click Control Panel.
Click Programs, and then click Programs and Features.
Note If you are using Classic View in Control Panel, double-click Programs and Features.
In the list of programs, click Windows Mobile Device Center, and then click Uninstall.
In the Programs and Features dialog box, click Yes.
Repeat steps 1 through 4 to uninstall Windows Mobile Device Center Driver Update.
Install the latest version of Windows Mobile Device Center. For information about how to obtain the latest version, visit the following Microsoft Web site: