Why is there a Missing AutoresetEvent.WaitOne overload on .NET Framework 2.0

If have come across an anomaly where it seems that some machines that have not had a Windows Update applied to them in a VERY long time that the .NET Framework 2.0 didn't have a specific overload available in it. AutoResetEvent.WaitOne(int32) appears to be non existant under an early revision. According to MS documentation this method has always been there, but obviously it isn't. If you call AutoResetEvent.WaitOne(int32, boolean) it's fine. When you call this method is causes the application to completely crash without any chance of catching an exception etc. I have come up with a workaround for it, but wondered how people encourage their users to update their machines to the latest service packs etc.? Is it best to accept that they won't update and code accordingly, or force them to update by not letting the program start. ``` Dim au As System.Threading.AutoResetEvent au = New System.Threading.AutoResetEvent(False) Dim themethods() As MethodInfo themethods = au.GetType.GetMethods() Dim found As Boolean For Each m As MethodInfo In themethods If String.Equals(m.Name, "WaitOne", StringComparison.OrdinalIgnoreCase) Then Dim params() As ParameterInfo params = m.GetParameters If params.Length = 1 Then If params(0).ParameterType Is GetType(Integer) Then found = True Exit For End If End If End If Next Dim allowRun As Boolean = True If Not found Then ApplicationLog.Write("This system is running an old version of the Microsoft .NET Framework, please update with Windows Update to prevent errors.") If MessageBox.Show("This system is running an old version of the Microsoft .NET Framework, please update with Windows Update to prevent errors.", "Old Version of .NET Framework", MessageBoxButtons.OKCancel, MessageBoxIcon.Error, MessageBoxDefaultButton.Button2) = DialogResult.Cancel Then allowRun = False End If End If ```