Device Error Upgrading WFWG Over Windows with CO/Session

• Microsoft Windows for Workgroups version 3.1

SYMPTOMS

After upgrading to Windows for Workgroups (WFWG) from Windows version 3.0 or 3.1 with version 6.x of CO/Session installed, the following error message occurs when you try to run Windows for Workgroups in enhanced mode:

   A device has been specified more than once in the SYSTEM.INI file
   or a device specified in SYSTEM.INI conflicts with a device which
   is being loaded by an MS-DOS device driver or application. Remove
   the duplicate entry from the SYSTEM.INI file and restart Windows.

CAUSE

Both CO/Session and Windows for Workgroups install a virtual communications driver (VxD). When Windows for Workgroups upgrades, it places a second VxD in the [386Enh] section of the SYSTEM.INI file. Even though these drivers have different filenames, Windows for Workgroups sees them as duplicates because they are both virtual communications drivers.

CO/Session originally adds:

   DEVICE=CS$VCD.386

   DEVICE=VCD.386

WORKAROUND

1. Edit the SYSTEM.INI file with any text editor.

2. Locate the [386Enh] section and find lines similar to the following:

         DEVICE=CS$VCD.386
         DEVICE=VCD.386
   

   NOTE: The line may read DEVICE=VCD$CS.386

3. To enable the default Windows for Workgroups driver, insert a semicolon (;) at the beginning of the DEVICE=CS$VCD.386 line, as follows:

         ;DEVICE=CS$VCD.386
   

4. To enable the CO/Session driver, insert a semicolon (;) at the beginning of the DEVICE=VCD.386 line:

         ;DEVICE=VCD.386
   

MORE INFORMATION

For additional information concerning functionality of CO/Session and Windows for Workgroups, contact Triton Technologies, Inc.

CO/Session is manufactured by Triton Technologies, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.