Err Msg: Unable to Log You on Because the Netlogon Service Is Not Running

ID: Q234655

The information in this article applies to:

Microsoft Windows NT Server version 4.0
Microsoft Windows NT Server, Enterprise Edition version 4.0
Microsoft Windows NT Workstation version 4.0

SYMPTOMS

When you restart your computer, the Netlogon service may not start and the following error message is displayed when you attempt to log on at the server console:

Unable to log you on because the Netlogon service is not running.

The server may start successfully after multiple restarts.

CAUSE

This behavior occurs because the Security Accounts Manager (SAM) for the domain does not initialize if the locale for the computer is set to use a code page that uses unicode double compression. Locales that are known to support this feature are Danish and Hungarian. The way string comparisons are handled for double compression code pages causes the problem.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or later:


   Date      Time    Size      File name      Platform
   ---------------------------------------------------
   06/02/99  03:03   374,544   Kernel32.dll   x86
   06/02/99  03:04   593,168   Kernel32.dll   Alpha

NOTE: If this product was already installed on your computer when you purchased it from the Original Equipment Manufacturer (OEM) and you need this fix, please call the Pay Per Incident number listed on the above Web site. If you contact Microsoft to obtain this fix, and if it is determined that you only require the fix you requested, no fee will be charged. However, if you request additional technical support, and if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support, you may be charged a non-refundable fee.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:

Q154871 Determining If You Are Eligible for No-Charge Technical Support

WORKAROUND

To work around this problem, change the locale to one that does not use double compression (this includes all English language locales).

STATUS

Microsoft has confirmed this to be a problem in Windows NT 4.0.

Additional query words:


Keywords          : kbbug4.00 kbfix4.00 
Version           : winnt:4.0
Platform          : winnt 
Issue type        : kbbug

Last Reviewed: July 21, 1999