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A Microsoft Windows 98-based client may not receive advertisements that are distributed to its user group. When this problem occurs, you see an entry that is similar to the following in the Odpwnt9x.log file on the Windows 98-based client computer:
User Group is "(null)"~
The Odpwnt9x.log file is located in the %Windir%\MS\SMS\Logs folder.
This problem occurs when the name of the user group has more than 20 characters. Windows 98 clients cannot retrieve the name of a user group when the name has more than 20 characters. Therefore, the clients cannot receive advertisements that are distributed to that user group.
To work around this problem, add the user account to a user group whose name has less than 20 characters. Then, distribute the advertisement to this user group.
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
307004 Group Policy not applied for users in groups with long names
826854 How to troubleshoot problems that occur when you use SMS 2.0 or SMS 2003 to advertise programs to SMS clients
limitation length 20 char named Ad log targeted empty