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Home/ Questions/Q 8895957
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Editorial Team
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Editorial Team
Asked: June 14, 20262026-06-14T23:55:06+00:00 2026-06-14T23:55:06+00:00

public partial class Form1 : Form { [DllImport(user32.dll, CharSet = CharSet.Auto, ExactSpelling = true)]

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public partial class Form1 : Form
{
    [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
    private static extern IntPtr GetForegroundWindow();

    public Form1()
    {
        InitializeComponent();
        var proc = Process.GetProcesses().Single(x => x.Handle == GetForegroundWindow());
    }
}

I’ve tried running the app as Administrator, no go.
What am I doing wrong here that I get this exception?

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  1. Editorial Team
    Editorial Team
    2026-06-14T23:55:07+00:00Added an answer on June 14, 2026 at 11:55 pm

    Turns out that the whole loop I was doing was also going over protected processes which resulted in access denied

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