SYMPTOMS
A Microsoft Windows Server 2003-based Microsoft Internet Authentication Service (IAS) server stops responding when IAS receives an unknown attribute in a packet.
Also, the following event message may appear in the Application log in Event Viewer:
Event Type: Error
Event Source: Application Error
Event Category: (100)
Event ID: 1000
Date: 12/07/2004
Time: 4:38:12 AM
User: N/A
Computer: <Computer_Name>
Description:
Faulting application svchost.exe, version 5.2.3790.0, faulting module iassam.dll, version 5.2.3790.0, fault address 0x00009ace.
For more information, see Help and Support Center at http://support.microsoft.com.
Data:
0000: 41 70 70 6c 69 63 61 74 Applicat
0008: 69 6f 6e 20 46 61 69 6c ion Fail
0010: 75 72 65 20 20 73 76 63 ure svc
0018: 68 6f 73 74 2e 65 78 65 host.exe
0020: 20 35 2e 32 2e 33 37 39 5.2.379
0028: 30 2e 30 20 69 6e 20 69 0.0 in i
0030: 61 73 73 61 6d 2e 64 6c assam.dl
0038: 6c 20 35 2e 32 2e 33 37 l 5.2.37
0040: 39 30 2e 30 20 61 74 20 90.0 at
0048: 6f 66 66 73 65 74 20 30 offset 0
0050: 30 30 30 39 61 63 65 0009ace
RESOLUTION
Service pack information
To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
889100 How to obtain the latest service
pack for Windows Server 2003
Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows Server 2003 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
Prerequisites
No prerequisites are required.
Restart requirement
You do not have to restart your computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
File information
The English version of this hotfix has the file attributes (or later file attributes) 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.
Windows Server 2003, Itanium-based versions
Date Time Version Size File name Platform
---------------------------------------------------------------------
19-Apr-2005 00:15 5.2.3790.312 336,384 Iassam.dll IA-64
19-Apr-2005 00:15 5.2.3790.312 102,400 Wiassam.dll x86
Windows Server 2003, x86-based versions
Date Time Version Size File name
---------------------------------------------------------
19-Apr-2005 15:15 5.2.3790.312 102,400 Iassam.dll