Using Cognos Scheduler when machine is logged off or session is over.

Resolving The Problem

Basically, since scheduler is an application, it will close when you log out. However, there is a workaround to this problem. We can use Windows scheduler to call a batch file which in turn can call a macro with the IMR file in its command line as an argument. I am appending an example that I found at Cognos's support site:
Description:

How can I use a macro to open an Impromptu report without coding the report path?

or

How can I pass a variable to the Impromptu OpenReport method?

Solution:

An example macro follows. Please note that this is for example purposes only and was tested with Impromptu 6.0.

Sub Main()

Dim variable as string

Dim objImpApp As object

Dim objImpRep As Object

variable=Command$

Set objImpApp = CreateObject("CognosImpromptu.Application")

objImpApp.Visible 1

MsgBox variable 'This line is to verify the report path being passed for testing purposes

set objImpRep = ObjImpApp.OpenReport(variable)

End Sub

In order to pass a parameter to a macro from the command line or from within a batch file, the following command must be used:
For early builds of Impromptu:

C:\cognos\BI97\runmac32.exe d:\test.mac /cmd d:\test.imr

For current versions of Impromptu:

c:\program files\cognos\cer3\bin\runmac32.exe d:\test.mac d:\test.imr