I´ve windows 10 and installed the free available King of Fighters 2002. Unfortunatly its impossible to start the game.
A window apears which says " Error, Application doesn´t work.
I also tried win xp compatibility mode but that didn ´t help.
Anybody else with the same problem?

Try running the game outside of Galaxy if you;re trying to launch from there. Also try running it as admin to see if that helps.

No, tested both now. that doesn´t help. I get the same error.

Is that the ===>>>SPECIFIC<<<=== error you're receiving?

I'm asking because I have a feeling it;s a paraphrase.

Here is the screenshot

edit: problem is solved. After a restart everything works.
... Until i start gog.
So the solution is to start the game without having started gog before.
Probably there was some background process when i did test this the last time.

Probably not the best promotion for gog to start with this game as a giveaway :).

when I click on game icon, says ''...emo application'' and the game closes! what the f*** is that?

not sure, An better way is to download mame, copy the kof2002.zip to mame's rom folder, get the complete neogeo.zip on google, and play the game it was meant to play

Do you mind my asking what antivirus you are using? Have you tried adding an exception for the game's folder in your antivirus? When you launch the game with Galaxy open, are you using a shortcut on your desktop, or clicking "Play" inside Galaxy itself?