What does stdole.dll do?
It seems that stdole.dll is a primary interop assembly. See Office 2003 Primary Interop Assemblies on MSDN.
stdole
Error message “Unable to install or run the application. The application requires stdole Version 7.0.3300.0 in the GAC”
Try going to the Publish tab in the project properties and then select the Application Files button. Then set the following properties: File Name of stdole.dll Publish status to Include Download Group to Required After that you need to republish your application. If the reference has CopyLocal=true, then the reference will be published with the … Read more