Miracast display resolution changes after you shut down and then restart a Windows 8.1-based computer

Applies to: Windows 8.1Windows 8.1 EnterpriseWindows 8.1 Pro

Symptoms


Consider the following scenarios.

Scenario 1
  • You connect to Miracast and then wirelessly project to an external display by using extended display mode.
  • You set the screen resolution for the external display to a resolution that is not supported on the local display.
  • You leave Miracast connected and then shut down the system

    Note You shut down the system completely. Then, you restart the system.

  • After the computer shuts down, you restart it.

In this scenario, the local display is set to the minimum supported screen resolution.

Scenario 2
  • You connect to Miracast and then wirelessly project to an external display by using extended display mode.
  • You set the local display to the maximum supported resolution. For example, you set the local display to a resolution of 1366 x 768.
  • You set the screen resolution for the external display to a lower resolution than the local display. For example, you set the external display to a resolution of 1280 x 768.
  • You leave Miracast connected and then shut down the system

    Note You shut down the system completely. Then, you restart the system.

  • After the computer shuts down, you restart it.

In this scenario, the local display is set to the lower resolution that you set for the external display. For example, the local display is set to a resolution of 1280 x 768.

Resolution


To resolve this issue, we have released an update rollup and a hotfix for Windows 8.1 or Windows Server 2012 R2.

Get the update rollup for Windows 8.1 or Windows Server 2012 R2

To resolve this issue, install the update rollup that is dated November 2014.

Get the November 2014 update rollup for Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2

Get the hotfix for Windows 8.1 or Windows Server 2012 R2

A supported hotfix is available from Microsoft Support. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this update, you must first have update 2919355 installed on Windows 8.1 or Windows Server 2012 R2.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.

Status


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

More Information


Miracast is a wireless technology that the computer can use to project your screen to televisions, projectors, and streaming media players that also support Miracast. You can use this technology to share what you’re doing on your computer, present a slide show, or even play your favorite game on a larger screen.

References


Learn about the terminology that Microsoft uses to describe software updates.