IIS Registry Setting ReplyWithHTTP1.1 May Cause Problems

ID: Q193419

The information in this article applies to:

Microsoft Internet Information Server version 4.0
Microsoft Windows NT Server version 4.0, Terminal Server Edition

SYMPTOMS

If you set the following registry setting:


   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3SVC\Parameters
   \ReplyWithHTTP1.1 REG_DWORD to 0 (zero)

Internet Information Server (IIS) 4.0 will still use HTTP 1.1 features (such as chunked transfer encoding). This may cause problems on the client such as TCP connections remaining open that the client assumes will be closed, and the client displaying the chunk lengths as part of the HTML (because it is not expecting chunked content from a 1.0 server).

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, please see the following article in the Microsoft Knowledge Base:

Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS

Microsoft has confirmed this to be a problem in Internet Information Server version 4.0. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

Additional query words: IIS hotfix hot fix qfe quick fix engineering patch

Keywords : NT4SP4Fix
Version : WINNT:4.0
Platform : winnt
Issue type : kbbug