Error message when you start Groove Virtual Office or Groove Workspace: "Invalid Class String" (916420)

The information in this article applies to:

Groove Virtual Office 3.0 File Sharing Edition
Groove Virtual Office 3.0 Professional Edition
Groove Virtual Office 3.0 Project Edition
Groove Virtual Office 3.0 Trial Edition
Groove Virtual Office 3.1 File Sharing Edition
Groove Virtual Office 3.1 Professional Edition
Groove Virtual Office 3.1 Project Edition
Groove Virtual Office 3.1 Trial Edition
Groove Workspace 2.5 Preview Edition
Groove Workspace 2.5 Professional Edition
Groove Workspace 2.5 Project Edition
Groove Workspace 2.5 Standard Edition

SYMPTOMS

When you start Groove Virtual Office or Groove Workspace, you receive the following error message:

Invalid Class String.

CAUSE

This issue occurs because the Jscript.dll file is missing, is unregistered, or is corrupted. The Jscript.dll file may become corrupted when you reinstall software that registers the file. For example, the Jscript.dll file may become corrupted when you reinstall Internet Explorer.

RESOLUTION

For Groove to function correctly, you must replace or register this file.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

831430 Several dialog boxes are blank

Modification Type:	Major	Last Reviewed:	7/18/2006
Keywords:	kbprb kbExpertiseInter kbtshoot KB916420 kbAudKnowledgeWorker