Windows10 1709 RemoteApp – Pop-ups hidden behind main window

故障现象:

RemoteApp – 隐藏在主窗口后面的弹出窗口

原因 :

Cause :

EVENT_SYSTEM_FOREGROUND comes too soon on the server. We end up sending the incorrect z-order to the client because in some scenarios the z-order calculation has not completed before we send it. A race condition exists in RemoteApp when a window is activated resulting in the activated window opening behind the previous foreground window. After the RemoteApp widow is activated, RdpShell.exe checks the server z-order before win32k.sys finishes computing the new z-order. When this condition occurs, Rdpshell.exe sends the wrong z-order instructions to mstsc.exe on the client. This fix introduces timer code to cause RdpShell.exe to wait for win32k.sys to finish computing the z-order before sending the new z-order to the client.

解决办法:

1. 将 HKEY_CURRENT_USER\Control Panel\Desktop 中的 ForegroundLockTimeout 的值更改为“0”
2. 注销/登录

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Source: github.com/k4yt3x/flowerhd
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