DOCUMENT:Q260729 30-JUL-2002 [iis] TITLE :HOW TO: Enable Schannel Logging PRODUCT :Internet Information Server PROD/VER::4.0,5.0 OPER/SYS: KEYWORDS:kbOSWin2000 kbHOWTOmaster ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server version 4.0 - Microsoft Internet Information Services version 5.0 - Microsoft Internet Information Services version 5.1 ------------------------------------------------------------------------------- IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base: Q256986 Description of the Microsoft Windows Registry IN THIS TASK ------------ - SUMMARY - Enable Logging - Logging Options SUMMARY ======= When you enable Schannel event logging on a computer that is running Microsoft Windows NT Server 4.0, Microsoft Windows 2000 Server, or Microsoft Windows XP Professional, detailed information from Schannel events can be written to the Event Viewer logs. This article describes how to enable and configure Schannel event logging. -------------- WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk. NOTE: This registry key is present already in Windows 2000 and XP Professional. 1. Start Registry Editor. To do this, click Start, click Run, type regedt32, and then click OK. 2. Locate the following key in the registry: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SecurityProviders\SCHANNEL 3. On the Edit menu, click Add Value, and then add the following registry value: Value Name: EventLogging Data Type: REG_DWORD NOTE: After you add this property, you must give it a value. See the table in the Logging Options section to obtain the appropriate value for the type of events that you want to log. 4. Exit Registry Editor. 5. Click Start, click Shut Down, click to select Restart, and then click OK to restart the computer. (Logging does not take effect until after you restart the computer). --------------- The default value for Schannel event logging is 0x0000 in Windows NT Server 4.0, which means that no Schannel events are logged. In Windows 2000 Server and Windows XP Professional, this value is set to 0x0001, which means that error messages are logged. Additionally, you can log multiple events by specifying the hexadecimal value that equates to the logging options that you want. For example, to log error messages (0x0001) and warnings (0x0002), set the value to 0x0003. +-----------------------------------------------+ | Value | Description | +-----------------------------------------------+ | 0x0000 | Do not log | +-----------------------------------------------+ | 0x0001 | Log error messages | +-----------------------------------------------+ | 0x0002 | Log warnings | +-----------------------------------------------+ | 0x0004 | Log informational and success events | +-----------------------------------------------+ Additional query words: iis 5 ====================================================================== Keywords : kbOSWin2000 kbHOWTOmaster Technology : kbiisSearch kbiis500 kbiis400 kbiis510 Version : :4.0,5.0 Issue type : kbhowto ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.