問題環境：Citrix XenApp 4.5/5.0 For Windows Server 2003
問題描述：Citrix AMC(Access Management Console)使用者清單消失
錯誤訊息：
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************** 例外狀況文字 **************
System.NullReferenceException: 並未將物件參考設定為物件的執行個體
...(下略)
...(下略)
解決方案：
I was getting this error with a new 4.5/Win2003 farm when trying to navigate through servers or published applications in the Management Console. The AMC wouldn't show users connected and then the .net error would randomly pop up.
Just by luck I tried; View-> Set Accessibility Options-> Use Defaults and it all works now. I didn't note the previous settings.
Just by luck I tried; View-> Set Accessibility Options-> Use Defaults and it all works now. I didn't note the previous settings.
解決情況：已解決
