Microsoft KB Archive/91198

= Device Error Upgrading WFWG Over Windows with CO/Session =

Article ID: 91198

Article Last Modified on 11/5/1999

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APPLIES TO


 * Microsoft Windows for Workgroups 3.1

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This article was previously published under Q91198



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 Windows for Workgroups upgrade then adds: DEVICE=VCD.386



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

Additional query words: 3.10 3.1

Keywords: KB91198

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