ok i was downloading maplestory and when it was done instead of saying open it said windows p didt trust the file and its been doing that ever sice what do i do please tell me step by step
sorry i spelled wrong i ment to say windows xp didnt since

It's possible that your security software does not trust this program. Security Programs like McAfee will sometimes block you from downloading software if it is deemed unsafe by McAfees Security Center.