Starting with Windows Vista, Microsoft segregated the desktop used by services from the user's desktop. Special configuration is needed on Windows to get =USE_VISIBLE_DESTOP= to work when Condor is running as a service.  These instructions apply to Windows 7 also.

The basic steps are
*: Start the *Interactive Services Detection* service
*: Enable _Allow service to interact with desktop_ for the condor service

Both of these things can be accomplished via the Windows Services Management Console.

*: Open the Services Management Console:

1:: Click on the _Start Menu_
1:: Open the *Control Panel*
1:: Select _Administrative Tools_
1:: Select _Services_

If the _Services_ option is missing, then use the following steps to access it:

1:: Choose _Run_ from the _Start Menu_
1:: Type =services.msc= and press *Enter* or click *OK*

*: Enable interactive services using Services Management Console:

1:: Find the *Interactive Services Detection* service
1:: Bring up its properties by double-clicking on it
1:: Change the _Startup type_ to *Automatic*
1:: Click on the _Start_ button below the _Service status_ label
1:: Click _OK_

*: Make the Condor service interactive using Services Management Console:

1:: Find the *Condor* service
1:: Bring up its properties by double-clicking on it
1:: Switch to the _Log On_ page
1:: Check the _Allow service to interact with desktop_ option
1:: Click _OK_


Thanks to Ben Burnett for this information which was copied from his original post on his Wiki -http://ben.versionzero.org/wiki/Condor_Enable_Visible_Desktop_on_Vista