Microsoft KB Archive/160582

= Too Many Connected Users Err. Msg. When Use SSL and IE 3.0 =

Article ID: 160582

Article Last Modified on 6/23/2005

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APPLIES TO


 * Microsoft Internet Information Server 1.0
 * Microsoft Internet Information Server 2.0

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This article was previously published under Q160582



We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx





SYMPTOMS
When you open a link on a secured Internet Information Server (IIS) website, you will get the following error message:

Too many connected users.



CAUSE
Microsoft Internet Explorer version 3.01 does not close Secure Sockets Layer (SSL) connections to an HTTPS web server correctly. Therefore, it causes open connections to stay until the server times out the connections.

Netscape Navigator version 3.x does not cause the above error.



WORKAROUND
WARNING: Using Registry Editor incorrectly can cause serious, system-wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.

Turn off keep-alives on Internet Information Server by using regedit (or regedt32) and the following entry:

NOTE: The following entry turns off keep-alives to on SSL connections. However, it breaks Windows NT Challenge/Response authentication.

HKEY_LOCAL_MACHINE\ \System \CurrentControlSet \Services \W3SVC \Parameters \SslNoKeepAlive:

REG_DWORD: 1



STATUS
Microsoft has confirmed this to be a problem with Microsoft Internet Explorer version 3.01. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Keywords: kberrmsg kbbug KB160582

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