The lock screen displays incorrectly in Windows 8 on an ultra-high-definition display

Applies to: Windows 8Windows 8 ProWindows 8 Enterprise


After you connect a Windows 8-based computer to an ultra-high-definition display such as a 4K2K monitor, you experience the following issues:
  • The lock screen and the sign-in screen are shown at the same time.
  • The lock screen image is not displayed in full-screen view.

This issue occurs with displays that have resolutions greater than 2560 × 2560.


Update information 

To resolve this issue, install update rollup 2845533. For more information about how to obtain this update rollup package, click the following article number to view the article in the Microsoft Knowledge Base:
2845533 Windows RT, Windows 8, and Windows Server 2012 update rollup: June 2013


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.