Symptoms. You have a computer that's running Windows 8 or Windows Server 2012. At the lock screen, and after a display time-out occurs, the DWM.exe process consumes a high percentage of CPU resources. This excessive CPU usage continues until you move the mouse pointer or touch the keyboard.

This article describes an issue in which a memory leak occurs in Desktop Window Manager (dwm.exe) in Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1. An update is available to resolve this issue. Before you install this update, check out the Prerequisites section.

This issue occurs because of a defect in Dwm.exe that causes the process to incorrectly show the visual effect of closing the window. Resolution To resolve this issue, we have released an update rollup and a hotfix for Windows 8.1 or Windows Server 2012 R2.

Describes an issue in which a memory leak occurs in the DWM.exe process on a computer that is running Windows 8 or Windows Server 2012. This issue occurs when you disconnect from a Remote Desktop session, change the display resolution for the session, and then reconnect to the session.

Swipe in from the right edge of the screen, and then tap Search.Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.Type Command Prompt in the Search box, right-click Command Prompt, and then click Run as administrator.If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.

The Desktop Window Manager Session Manager service stops on the problematic terminal server. Cause. The problem occurs because of an issue in the Desktop Window Manager Session Manager service. Resolution. Hotfix information. A supported hotfix is available from Microsoft.

In the search box on the taskbar, type Windows Security, and then select it from the results. Select Device performance & health to view the Health report. Note: If your device is managed by your organization, your administrator may not have granted you permission to view Device performance & health.

The "DwmEnableBlurBehindWindow" function does not work correctly for a non-rectangular window in Windows 7 and in Windows Server 2008 R2 - Microsoft Support. Windows 7 Windows Server 2008 R2. Symptoms. Consider the following scenario: You use an Aero theme for the desktop on a computer that is running Windows 7 or Windows Server 2008 R2.

Symptoms. When you start an application in Windows 7 or Windows Server 2008 R2, a blank or transparent window and a blank or transparent taskbar preview are displayed. This problem most frequently occurs in a Microsoft Office 2013 application or a third-party product.