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Is this an easily fixable error? System.Runtime.InteropServices.COMException (0x800705AF)

Tim Barker 0 Reputation points
2026-06-03T13:35:16.3033333+00:00

I keep getting the following error when I log into my session after shutting down. It started happening after the most recent update in the last week and it seems related. The windows box is titled Microsoft .NET Framework with the white cross on red circle indicating "Unhandled exception error has occurred in your application" though it does not give the application's name which leaves it pretty broad as to programme, service or other...

System.Runtime.InteropServices.COMException (0x800705AF)

at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)

at System.Management.ManagementObjectCollection.ManagementObjectEnumerator.MoveNext()

at FusionShortcut.Helpers.GetModelName(String querystring, String itemstring)

at FusionShortcut.Form1.WndProc(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

There is a whole heap of related messages but this seemed the most important part at the start (?).

Windows for home | Windows 11 | Performance and system failures
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  1. DaveM121 891K Reputation points Independent Advisor
    2026-06-03T14:13:53.6333333+00:00

    Even though the heading on that error popup is labelled Microsoft .NET Framework, this is not a problem with the Microsoft .NET Framework, it is usually a problem with some app set to start with Windows.

    Open Task Manager (Ctrl + Shift + Esc).

    Select the Start-Up tab.

    Disable all apps that start with Windows, except any drivers or anti-virus in the list that you may have installed.

    Restart (not shut down) your PC and check if that stops the error on startup.

    If it does, enable the startup apps one at a time and restart your PC to try to find what app is generating the error.

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