"Invalid Access Memory Location (998)" error message when a 32-bit application calls the LsaLogonUser function on a 64-bit version of Windows Server 2003


When a 32-bit application runs on a 64-bit version of Microsoft Windows Server 2003, and the application calls the LsaLogonUser function to authenticate the logon data of a security principal by using stored credentials information, the function may return the following error:
Invalid Access Memory Location (998)


This issue may occur if the LocalGroups input parameter is specified in the LsaLogonUser function in the 32-bit application. The "Invalid Access" error occurs because the 32-bit structure that is used in the function is not correctly handled in the 64-bit environment.


Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

File information

The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Date Time Version Size File name
20-Feb-2004 19:53 5.2.3790.121 167,424 Eventlog.dll IA-64
20-Feb-2004 19:53 5.2.3790.132 2,038,272 Lsasrv.dll IA-64


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.

More Information

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 833620 - Last Review: Feb 15, 2017 - Revision: 3

Microsoft Windows Server 2003, Enterprise x64 Edition