<p>&lt;p&gt;I'm having the same problem on my ThinkPad P71 running Win10Pro 22H2&amp;lt;br&amp;gt; It opens and then stalls for about 20 seconds then just shuts down. I tried enabling the xml system. diagnostic flags by setting their values all to&amp;lt;br&amp;gt; &amp;amp;quot;1&amp;amp;quot;. Behavior is slightly different. Now the Icons in the menu bar appear to fill out at the top of the window but otherwise same thing.&amp;lt;br&amp;gt; &amp;lt;br&amp;gt; I have second workstation in my lab also running Win10Pro 22H2 and it works fine. I filed a post with Tek quite awhile back but they never got back to me. I guess they don't care. I should add I'm using SignalVu 5.5.0143&lt;/p&gt;Since I'm using an RSA306B I tried V4.1.022 - same problem.</p><br> <br> They both cause Kernel.base dll errors due to an unhandled exception in the .NET clr:<br> <br> Application: SignalVu-PC.exe<br> Framework Version: v4.0.30319<br> Description: The process was terminated due to an unhandled exception.<br> Exception Info: System.ArgumentOutOfRangeException<br>    at System.ThrowHelper.ThrowArgumentOutOfRangeException(System.ExceptionArgument, System.ExceptionResource)<br>    at Tektronix.RF.RSA.HI.Controls.GNSSControl.ListPortsAndIds(System.Collections.Generic.List`1<Int32> ByRef)<br>    at Tektronix.RF.RSA.HI.Controls.GNSSControl.updateComPortSelections()<br>    at Tektronix.RF.RSA.HI.Controls.GNSSControl.set_Analysis(Tektronix.RF.RSA.Shared.IAnalysis)<br>    at Tektronix.RF.RSA.HI.AnalysisWindow.InitializeAnalysis()<br>    at Tektronix.RF.RSA.HI.RSAWindow.OnLoad(System.EventArgs)<br>    at Tektronix.RF.RSA.HI.AnalysisWindow.OnLoad(System.EventArgs)<br>    at System.Windows.Forms.Form.OnCreateControl()<br>    at System.Windows.Forms.Control.CreateControl(Boolean)<br>    at System.Windows.Forms.Control.CreateControl()<br>    at System.Windows.Forms.Control.WmShowWindow(System.Windows.Forms.Message ByRef)<br>    at System.Windows.Forms.Control.WndProc(System.Windows.Forms.Message ByRef)<br>    at System.Windows.Forms.Form.WmShowWindow(System.Windows.Forms.Message ByRef)<br>    at DevExpress.XtraEditors.XtraForm.WndProc(System.Windows.Forms.Message ByRef)<br>    at Tektronix.RF.RSA.HI.RSAWindow.WndProc(System.Windows.Forms.Message ByRef)<br>    at Tektronix.RF.RSA.HI.AnalysisWindow.WndProc(System.Windows.Forms.Message ByRef)<br>    at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr, Int32, IntPtr, IntPtr)<br>    at DevExpress.Utils.Drawing.Helpers.NativeMethods+UnsafeNativeMethods.DefSubclassProc(IntPtr, IntPtr, IntPtr, IntPtr)<br>    at DevExpress.Utils.Drawing.Helpers.Win32SubclasserFactory+Win32Subclasser.SubClassProcInner(IntPtr, IntPtr, IntPtr, IntPtr, IntPtr, IntPtr)<br> <br>