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>Look for the .ShowInTaskbar property if you have any forms that may show in desktop. If you are running a foreign utility, you may run it using API_APPRUN class (from late Ed Rauh, available here in downloads), it has an option to run it hidden. I'm using that a lot.

I looked into .ShowInTaskbar before but it seem it's when it close the form or _vfp(not sure) that I see it for a fraction of a second in the taskbar. I don't see it on the windows desktop. I did force .ShowInTaskbar = .T. and making the form a top-level form with no success.

And it's not a "foreign utility" :D but my app could be use by third party software.