Article ID: 195121
Article Last Modified on 10/27/2006
APPLIES TO
- Microsoft SNA Server 3.0 Service Pack 4
- Microsoft SNA Server 4.0
- Microsoft SNA Server 3.0 Service Pack 2
- Microsoft SNA Server 3.0 Service Pack 3
- Microsoft SNA Server 4.0
- Microsoft SNA Server 4.0 Service Pack 1
This article was previously published under Q195121
SYMPTOMS
The SNA Server service may fail unexpectedly with an access violation, causing all users to lose their SNA sessions. When this specific problem occurs, SNA Server will log the following event:
Source: SNA Server
Event: 624
Creating dump file SNADUMP.LOG for snaservr.exe
If Drwtsn32.exe is the default debugger, the Drwtsn32.log file will indicate an access violation fault in routine s1pnsuns(). The log entry will appear as follows:
Application exception occurred:
App: snaservr.DBG (pid=164)
<date, time omitted>
Exception number: c0000005 (access violation)
[...]
State Dump for Thread Id 0xa5
eax=00000000 ebx=0000009a ecx=00000000 edx=00420000 esi=01281aec
edi=00000000
eip=003e1389 esp=002bfdd4 ebp=0000002f iopl=0 nv up ei pl nz na
po nc
cs=001b ss=0023 ds=0023 es=0023 fs=0038 gs=0000 efl=00000206 function: s1pnsuns
003e1351 662d0102 sub ax,0x201
003e1355 0fbfc8 movsx ecx,ax
003e1358 6689842480000000 mov [esp+0x80],ax ss:002bfe54=0711
003e1360 8b048d80694600 mov eax,[s1scb (00466980)+ecx*4]
ds:00000000=????????
003e1367 66c74424127900 mov word ptr [esp+0x12],0x79
ss:0089e6f8=????
003e136e 668b9092000000 mov dx,[eax+0x92] ds:00000092=????
003e1375 6689542418 mov [esp+0x18],dx ss:0089e6f8=????
003e137a 0fbf480a movsx ecx,word ptr [eax+0xa]
ds:005de923=0000
003e137e 66bb9a00 mov bx,0x9a
003e1382 8b048dcce84400 ds:00000000=????????
mov eax,[s1dfttmo+0x6
(0044e8cc)+ecx*4]
FAULT ->003e1389 668b403e mov ax,[eax+0x3e]
CAUSE
The SNA Server service was attempting to process an unsolicited administrator request to start and/or stop a session after the SNA session had already ended.
RESOLUTION
SNA Server 3.0
To resolve this problem, obtain the latest service pack for SNA Server version 3.0. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
184307 How to Obtain the Latest SNA Server Version 3.0 Service Pack
SNA Server 4.0
This problem was corrected in the latest SNA Server version 4.0 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):
S E R V P A C K
WORKAROUND
This problem may occur when an administrator is manually stopping an active SNA session using the SNA Manager or MMC interface. If this administrative operation is not performed, this issue should not occur.
STATUS
Microsoft has confirmed this to be a problem in SNA Server 3.0 (including Service Packs 1 through 3), and 4.0 (including Service Pack 1). This problem was first corrected in SNA Server 3.0 Service Pack 4.
Keywords: kbbug kbfix KB195121
