Invalid class string / Invalid ProgID

This note applies to the instantiation of ActiveX components (not .NET assemblies). If a call to CreateObject (VBScript) or Server.CreateObject (ASP) or sp_OACreate (SQL) fails with the following errors: Invalid class string Invalid ProgID It indicates that the ActiveX has not been registered via regsvr32 on the computer, or the registry permissions on the ProgID key prevent the object from […]