Hi everybody! Ok i looked around but couldn't find anything resmebling my issue. I have Dot Net Framework 1.1(+servicepack) & 2(+hotfix) and Windows Media Player 10(also +hotfix) installing from RunOnceEx. I know i can do them both from svcpack.ini but this just seemed simpler to setup and maintain. The installations install beautifully, BUT before they commence I am getting a security warning dialog box that asks if I want to run the application(the installation .exe) or not. What confuses me is that i have several other third party apps (Java, Adobe, Symantec, etc) also installing during RunOnceEx that run without this security warning dialog box. Below is the relevent portion of my RunOnceEx Does this strike a chord with anyone? Or am i missing something totally obvious? I just started an unattended installation this morning so i'll try and post a screen shot later this afternoon of the security warning dialog box. Thank you.