When you deploy a duplicated or imaged Windows installation, it is required that the System Preparation (Sysprep) tool is used before the capture of the image. Sysprep prepares an installation of Microsoft Windows for duplication, auditing, and customer delivery.

If you clone a Windows 8 or Windows Server 2012 image for use on multiple concurrent instances and you run the Sysprep tool correctly, you will experience issues in which push notifications do not work.

For example, you may experience the following issues:

  1. Tile, badge, and toast notifications do not update even though Internet connectivity is available.
  2. Apps that rely on RAW notification do not work as expected. For example, you notice significantly reduced functionality in Mail, Calendar, and Messaging.
  3. It takes a long time to synchronize changes for roaming and family safety settings.

To resolve these issues, use one of the following methods:
  • Configure the computers by using the Sysprep /generalize command, and then deploy the image.
  • Replace the existing user account with a new account. The device identifier is stored as part of the user profile. Each new NTUser account that is added to a computer will receive a new identifier.

Details: KB314828. The Microsoft policy for disk duplication of Windows installations