WG1126: Updated AWFAXIO.DLL Prevents System Hangs

The information in this article applies to:

• Microsoft Windows for Workgroups versions 3.1, 3.11

Microsoft has produced an Application Note titled "Updated AWFAXIO.DLL Prevents System Hang in Microsoft At Work PC Fax with Certain Modems" (WG1126), which corrects a problem that occurs on some modems that use a Rockwell chip.

You can obtain this Application Note from the following sources:

• Microsoft's World Wide Web Site on the Internet
• The Internet (Microsoft anonymous ftp server)
• Microsoft Download Service (MSDL)
• Microsoft Product Support Services

TEXT OF WG1126

  Microsoft(R) Product Support Services Application Note (Text File)
         WG1126: UPDATED AWFAXIO.DLL PREVENTS SYSTEM HANG IN
          MICROSOFT AT WORK(TM) PC FAX WITH CERTAIN MODEMS

                                                  Revision Date: 11/94
                                                       1 Disk Included

 --------------------------------------------------------------------
| INFORMATION PROVIDED IN THIS DOCUMENT AND ANY SOFTWARE THAT MAY     |
| ACCOMPANY THIS DOCUMENT (collectively referred to as an Application |
| Note) IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER      |
| EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED      |
| WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR       |
| PURPOSE. The user assumes the entire risk as to the accuracy and    |
| the use of this Application Note. This Application Note may be      |
| copied and distributed subject to the following conditions:  1) All |
| text must be copied without modification and all pages must be      |
| included;  2) If software is included, all files on the disk(s)     |
| must be copied without modification (the MS-DOS(R)  utility         |
| diskcopy is appropriate for this purpose);  3) All components of    |
| this Application Note must be distributed together;  and  4) This   |
| Application Note may not be distributed for profit.                 |
|                                                                     |
| Copyright (C) 1994 Microsoft Corporation.  All Rights Reserved.     |
| Microsoft and MS-DOS are registered trademarks and Microsoft At     |
| Work and Windows are trademarks of Microsoft Corporation.           |
 --------------------------------------------------------------------

Introduction

The WG1126 disk included with this Application Note contains an updated version of the AWFAXIO.DLL file that corrects a problem associated with some fax modems that use a Rockwell chip. If you have a fax modem with a Rockwell chip (for example, the Megahertz XJACK) and are using Microsoft At Work PC Fax, your system may stop responding (hang) during the initialization process. To determine whether the updated AWFAXIO.DLL file is needed, perform the following steps:

1. Open Windows Terminal (usually located in the Accessories group).

2. Type the following command:

         AT*F2
   

The previous version of the AWFAXIO.DLL file from Microsoft At Work PC Fax sends an *F2 command to the modem to force XON/XOFF flow control. This command causes the Rockwell chip to start a Flash ROM download routine. The updated version of AWFAXIO.DLL does not contain the *F2 command.

To Install the Updated File

1. Insert the enclosed WG1126 disk in the appropriate floppy disk drive.

2. At the MS-DOS command prompt, type the following and press ENTER

         copy <drive>:\awfaxio.dll <destination>
   

   where <drive> is the floppy disk drive containing the WG1126 disk and <destination> is the drive and directory where your AWFAXIO.DLL file currently resides. For example, if the WG1126 disk is in drive A and Windows for Workgroups is installed on drive C in a directory called Windows, type the following command:

         copy a:\awfaxio.dll c:\windows\system
   

TO OBTAIN THIS APPLICATION NOTE

You can find WG1126.EXE (size: 25014 bytes) 
                       , a self-extracting file, on the following

• Microsoft's World Wide Web Site on the Internet

        On the www.microsoft.com home page, click the Support icon.
        Click Knowledge Base, and select the product.
        Enter kbfile WG1126.EXE (size: 25014 bytes) 
                               , and click GO!
        Open the article, and click the button to download the file.
  
  

• Internet (anonymous FTP)

        ftp ftp.microsoft.com
        Change to the Softlib/Mslfiles folder.
        Get WG1126.EXE (size: 25014 bytes) 
  

• Microsoft Download Service (MSDL)

        Dial (425) 936-6735 to connect to MSDL
        Download WG1126.EXE (size: 25014 bytes) 
  

   ARTICLE-ID: Q119591
   TITLE     : How to Obtain Microsoft Support Files from Online
               Services