kinect for windows V2.0 Developer Preview, camera working, depth sensor not working

I installed KinectSDK-v2.0-DevPreview1311 in my Windows 8.1 Operating System. While running KinectService.exe the status is

    ConnectionManager - DeviceNotification
    VVTechs SwitchVersion failed 0x80070057
    ConnectionManager - DeviceNotification
    ConnectionManager::_OnDeviceStatus - Connected

As a result camera is detected but depth sensor is not detected.

My Hardware specifications are Core i3 Ideapad, 4GB RAM

OS: windows 8.1

Update: I updated my SDK to latest version (1403)

    ConnectionManager - DeviceNotification
    Ctrl+C to exit.

    ConnectionManager::_OnAcquireColor status failed with 0x000003e3
    ConnectionManager::_OnAcquireColor status failed with 0x000003e3
    ConnectionManager::_OnAcquireColor status failed with 0x000003e3
    ConnectionManager::_OnAcquireColor status failed with 0x000003e3
    ConnectionManager::_OnAcquireColor status failed with 0x000003e3
    VVTechs SwitchVersion failed 0x80070057
    TerminateNuiService(1)
    ConnectionManager - DeviceNotification
    ConnectionManager::_OnDeviceStatus - Connected

Does any body know about the problem ?

Installing the most up to date SDK (DevPreview 1403) directly, led to the same problem on my Windows 8.1 OS. You did not mention if you have run the KinectFirmwareUpdate which seems to be important in order to use the Kinect Sensor properly.

What I have done in order to solve it:

1. Remove the currently installed SDK
2. Install the old SDK 1311
3. Run KinectFirmwareUpdate App
4. Remove old SDK 1311
5. Install SDK 1403
6. Run KinectFirmwareUpdate App

After applying the steps listed above, the problem did not occur anymore executing KinectService.

Hopefully it will help you, too.