APPC Printing Misinterprets ASCII Data

• Microsoft SNA Server, versions 3.0, 3.0 SP1, 3.0 SP2, 4.0

SYMPTOMS

During printing, the parser prematurely terminates the ASCII Transparent section, and begins to interpret the data as SCS codes. When this occurs, the SNA Print service may log the following event in the Windows NT Application Event Log:

Event ID: 4101
Source: PPV5250
Description: SCS parser has detected a parameter error.

CAUSE

The Closeprinter routine is not setting a pointer to NULL, which may cause calls to open a print session to fail at a later time. This results in Print Server losing track of its position in the datastream, causing some of the data to be misinterpreted as SCS codes instead of transparent data.

STATUS

Microsoft has confirmed this to be a problem in SNA Server versions 3.0, 3.0 SP1, 3.0 SP2, and 4.0.

This problem was corrected in the latest SNA Server versions 3.0 and 4.0 U.S. Service Packs. For information on obtaining these Service Packs, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words:

Keywords : kbprint kbbug4.00 kbbug3.00 kbbug3.00.sp2 kbbug3.00.sp1 snaprintservice
Version : WINDOWS:3.0,3.0 SP1,3.0 SP2,4.0
Platform : WINDOWS
Issue type : kbbug