Minimize, Maximize, and Close button disappear or display incorrectly in Windows 8.1 and Windows Server 2012 R2

Прилага се за: Windows 8.1 EnterpriseWindows 8.1Windows 8.1 Pro

This article describes an issue for caption bar buttons in Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2. A hotfix is available to resolve this issue. The hotfix has a prerequisite.

Symptoms


Caption bar buttons, such as Minimize, Maximize, and Close, disappear or display incorrectly in windows that have a custom window region in Windows 8.1, Windows RT 8.1, and Windows Server 2012 R2.

Resolution


To resolve the issue, install the hotfix that is described in this article.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that 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 Web site: 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 hotfix, you must first install the update 2919355 on Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2.  For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2919355 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 Update April, 2014.

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
Applications call the SetWindowRgn function to set the window region of a window. The window region determines the area within the window where the system permits drawing. The system displays no portion of a window that is outside the window region. For more information about window regions, go to the following Microsoft website: