DOCUMENT:Q126384 08-AUG-2001 [winnt] TITLE :Err Msg: User configuration for parameter Serial1 must ... PRODUCT :Microsoft Windows NT PROD/VER: OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation version 3.5 - Microsoft Windows NT Server version 3.5 ------------------------------------------------------------------------------- SYMPTOMS ======== You find the following error message in the System Log of Event Viewer: Event ID: 25 Source: Serial Type: Error Description: User configuration for parameter Serial1 must have PortAddress. CAUSE ===== This error message occur if you have an empty SerialX (where X is a number greater than or equal to 0) subkey in the following Windows NT Registry location: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services \Serial\Parameters An empty SerialX key is created in this location if you run Control Panel, choose Ports, choose the Advanced button. The empty SerialX key is created even if you choose Cancel without making any changes. RESOLUTION ========== To correct this problem, either: - Run Control Panel, choose Ports, and specify the correct Base I/O Port Address and IRQ settings for the serial port referenced in the error message. -or- - Delete the SerialX key under HKEY_LOCAL_MACHINE\SYSTEM \CurrentControlSet\Services\Serial\Parameters. Deleting this key causes Windows NT to use the serial port settings specified by the firmware. Do not use this workaround if you were previously required to use Control Panel to manually create the entry for the serial port. 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. STATUS ====== Microsoft has confirmed this to be a problem in Windows NT version 3.5. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available. Additional query words: prodnt advanced settings com port base i/o port address irq serial1 serial2 serial3 serial4 ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNTWsearch kbWinNT350search kbWinNTW350 kbWinNTW350search kbWinNTSsearch kbWinNTS350 kbWinNTS350search ============================================================================= 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 2001.