Microsoft KB Archive/192066

= XADM: Event Service with Internet Explorer 4.01 Hangs NT Shell (Explorer.exe) =

Article ID: 192066

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q192066





SYMPTOMS
When you right-click the Internet Explorer icon on the desktop, select Properties, and click OK, the Windows NT logon shell (Explorer.exe) hangs. This happens when you have Internet Explorer 4.01 and Exchange Server build 1960 (or later) installed on a clean Windows NT Server 4.0 with Service Pack 3.



CAUSE
Explorer.exe sends a windows broadcast message to all top-level windows awaiting response. In the Exchange Server event service, the broadcast message is missed by one of the COM threads and another thread is performing "if (Peek..." instead of "while(Peek," missing the message completely, which results in Internet Explorer hanging.

For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

136885 INFO: OLE Threads Must Dispatch Messages



RESOLUTION
To resolve this problem, obtain the latest service pack for Exchange Serverversion 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack



STATUS
Microsoft has confirmed that this is a problem in Exchange Server 5.5.

Keywords: kbbug kbfix kbqfe KB192066

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